The russet sparrow (''Passer cinnamomeus''), also called the cinnamon or cinnamon tree sparrow, is a
passerine
A passerine () is any bird of the order Passeriformes (; from Latin 'sparrow' and '-shaped'), which includes more than half of all bird species. Sometimes known as perching birds, passerines are distinguished from other orders of birds by th ...
bird of the
sparrow
Sparrow may refer to:
Birds
* Old World sparrows, family Passeridae
* New World sparrows, family Passerellidae
* two species in the Passerine family Estrildidae:
** Java sparrow
** Timor sparrow
* Hedge sparrow, also known as the dunnock or hedg ...
family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
Passeridae. A chunky little seed-eating bird with a thick bill, it has a body length of . Its
plumage
Plumage ( "feather") is a layer of feathers that covers a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage differ between species and subspecies and may vary with age classes. Within species, ...
is mainly warm
rufous
Rufous () is a color that may be described as reddish-brown or brownish- red, as of rust or oxidised iron. The first recorded use of ''rufous'' as a color name in English was in 1782. However, the color is also recorded earlier in 1527 as a di ...
above and
grey
Grey (more common in British English) or gray (more common in American English) is an intermediate color between black and white. It is a neutral or achromatic color, meaning literally that it is "without color", because it can be compos ...
below. It exhibits
sexual dimorphism
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most an ...
, with the plumage of both sexes patterned similarly to that of the corresponding sex of
house sparrow
The house sparrow (''Passer domesticus'') is a bird of the sparrow family Passeridae, found in most parts of the world. It is a small bird that has a typical length of and a mass of . Females and young birds are coloured pale brown and grey, an ...
. Its vocalisations are sweet and musical chirps, which when strung together form a song.
Three subspecies are recognised, differing chiefly in the yellowness of their underparts. The subspecies ''rutilans'' and ''intensior'' breed in parts of
eastern Asia
East Asia is the eastern region of Asia, which is defined in both geographical and ethno-cultural terms. The modern states of East Asia include China, Japan, Mongolia, North Korea, South Korea, and Taiwan. China, North Korea, South Korea a ...
, where they are usually found in light woodland, and the subspecies ''cinnamomeus'' breeds in the
Himalayas
The Himalayas, or Himalaya (; ; ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the planet's highest peaks, including the very highest, Mount Everest. Over ...
, where it is usually associated with terrace cultivation. The russet sparrow is the typical sparrow of human habitations in towns where the house and
Eurasian tree sparrow
The Eurasian tree sparrow (''Passer montanus'') is a passerine bird in the sparrow family with a rich chestnut crown and nape, and a black patch on each pure white cheek. The sexes are similarly plumaged, and young birds are a duller versio ...
s are absent. In the southern part of its range, the russet sparrow prefers higher altitudes, but in the north it breeds by the sea. The russet sparrow is known well enough in the Himalayas to have a distinct name in some languages, and is depicted in Japanese art.
This sparrow feeds mainly on the
seed
A seed is an embryonic plant enclosed in a protective outer covering, along with a food reserve. The formation of the seed is a part of the process of reproduction in seed plants, the spermatophytes, including the gymnosperm and angiosper ...
s of
herb
In general use, herbs are a widely distributed and widespread group of plants, excluding vegetables and other plants consumed for macronutrients, with savory or aromatic properties that are used for flavoring and garnishing food, for medicina ...
s and
grain
A grain is a small, hard, dry fruit ( caryopsis) – with or without an attached hull layer – harvested for human or animal consumption. A grain crop is a grain-producing plant. The two main types of commercial grain crops are cereals and legu ...
s, but it also eats
berries
A berry is a small, pulpy, and often edible fruit. Typically, berries are juicy, rounded, brightly colored, sweet, sour or tart, and do not have a stone or pit, although many pips or seeds may be present. Common examples are strawberries, rasp ...
and
insect
Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs ...
s, particularly during the breeding season. This diet makes it a minor pest in agricultural areas, but also a predator of insect pests. While breeding, it is not social, as its nests are dispersed. It forms flocks when not breeding, although it associates with other bird species infrequently. In some parts of its range, the russet sparrow migrates, at least to lower altitudes. Its nest is located in a tree cavity, or a hole in a cliff or building. The male chooses the nest site before finding a mate and uses the nest for
courtship display
A courtship display is a set of display behaviors in which an animal, usually a male, attempts to attract a mate; the mate exercises choice, so sexual selection acts on the display. These behaviors often include ritualized movement ("dances"), v ...
. The typical
clutch
A clutch is a mechanical device that engages and disengages power transmission, especially from a drive shaft to a driven shaft. In the simplest application, clutches connect and disconnect two rotating shafts (drive shafts or line shafts ...
contains five or six whitish eggs. Both sexes incubate and feed the young.
Taxonomy
The English ornithologist
John Gould
John Gould (; 14 September 1804 – 3 February 1881) was an English ornithologist. He published a number of monographs on birds, illustrated by plates produced by his wife, Elizabeth Gould, and several other artists, including Edward Lear, ...
described a specimen of the russet sparrow collected in the Himalayas at a meeting of the
Zoological Society of London
The Zoological Society of London (ZSL) is a charity devoted to the worldwide conservation of animals and their habitats. It was founded in 1826. Since 1828, it has maintained the London Zoo, and since 1931 Whipsnade Park.
History
On 29 ...
in December 1835 under the
binomial name
In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...
''Pyrgita cinnamomea''. His description was included in the volume of the society's proceedings for 1835 that was published on 8 April 1836. Dated 1835 on the title page but published in 1836. Its
specific name Specific name may refer to:
* in Database management systems, a system-assigned name that is unique within a particular database
In taxonomy, either of these two meanings, each with its own set of rules:
* Specific name (botany), the two-part (bino ...
comes from the
New Latin
New Latin (also called Neo-Latin or Modern Latin) is the revival of Literary Latin used in original, scholarly, and scientific works since about 1500. Modern scholarly and technical nomenclature, such as in zoological and botanical taxonomy ...
''cinnamomeus'', "cinnamon-coloured". The russet sparrow was described as ''Fringilla rutilans'', by the Dutch zoologist
Coenraad Jacob Temminck
Coenraad Jacob Temminck (; 31 March 1778 – 30 January 1858) was a Dutch aristocrat, zoologist and museum director.
Biography
Coenraad Jacob Temminck was born on 31 March 1778 in Amsterdam in the Dutch Republic. From his father, Jacob Temm ...
, from a specimen collected in Japan. Temminck's description is contained in his ''Nouveau recueil de planches coloriées d'oiseaux'' which was issued in 102 ''livraisons'' or parts between 1820 and 1839. It was at one time believed that the ''livraison'' containing the description of the russet sparrow was issued in 1835 but it has now been established that it appeared sometime in 1836 but as the precise date is not known under the rules of the
International Commission on Zoological Nomenclature
The International Commission on Zoological Nomenclature (ICZN) is an organization dedicated to "achieving stability and sense in the scientific naming of animals". Founded in 1895, it currently comprises 26 commissioners from 20 countries.
Orga ...
it is deemed to have been published on 31 December 1836. Most taxonomists give priority to Gould's publication and use the binomial name ''Passer cinnamomeus'' for the russet sparrow.
The russet sparrow has usually been placed in the
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...
'' Passer'', and within this genus it is seen as a part of the "
Palearctic
The Palearctic or Palaearctic is the largest of the eight biogeographic realms of the Earth. It stretches across all of Eurasia north of the foothills of the Himalayas, and North Africa.
The realm consists of several bioregions: the Euro-Si ...
black-bibbed sparrow" group, which includes the Eurasian tree sparrow as well as the house sparrow. It has generally been seen as a close relation of the house sparrow, and
Richard Meinertzhagen
Colonel Richard Meinertzhagen, CBE, DSO (3 March 1878 – 17 June 1967) was a British soldier, intelligence officer, and ornithologist. He had a decorated military career spanning Africa and the Middle East. He was credited with creating and ...
even considered it to be the same species as the Somali sparrow, one of the house sparrow's closest relatives.
However, studies of mitochondrial DNA indicate that the russet sparrow is an early offshoot or
basal
Basal or basilar is a term meaning ''base'', ''bottom'', or ''minimum''.
Science
* Basal (anatomy), an anatomical term of location for features associated with the base of an organism or structure
* Basal (medicine), a minimal level that is nec ...
species among the Palearctic black-bibbed sparrows. While mitochrondrial DNA suggests
speciation
Speciation is the evolutionary process by which populations evolve to become distinct species. The biologist Orator F. Cook coined the term in 1906 for cladogenesis, the splitting of lineages, as opposed to anagenesis, phyletic evolution withi ...
in ''Passer'' occurred during the
Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" ...
and
Pliocene
The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58 British ornithologist
J. Denis Summers-Smith
James Denis Summers-Smith (25 October 1920 – 5 May 2020) was a British ornithologist and mechanical engineer, a specialist both in sparrows and in industrial tribology.
Early life
Summers-Smith was raised in Glasgow, where he was born in ...
estimated that the russet sparrow separated from the other Palearctic black-bibbed sparrows about 25,000 to 15,000 years ago, during the last glacial period. During this time, sparrows would have been isolated in ice-free refugia, such as the lower
Yangtze
The Yangtze or Yangzi ( or ; ) is the longest river in Asia, the third-longest in the world, and the longest in the world to flow entirely within one country. It rises at Jari Hill in the Tanggula Mountains (Tibetan Plateau) and flow ...
valley, which Summers-Smith considered the most likely centre of evolution for the russet sparrow.
Thirteen subspecies have been described, but only three are widely recognised, these differing largely in the colour of their underparts. The subspecies ''Passer cinnamomea rutilans'' breeds in Japan,
Korea
Korea ( ko, 한국, or , ) is a peninsular region in East Asia. Since 1945, it has been divided at or near the 38th parallel, with North Korea (Democratic People's Republic of Korea) comprising its northern half and South Korea (Republi ...
,
Taiwan
Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the northe ...
, and southeastern and central China. The subspecies ''intensior'', described in 1922 by
Walter Rothschild
Lionel Walter Rothschild, 2nd Baron Rothschild, Baron de Rothschild, (8 February 1868 – 27 August 1937) was a British banker, politician, zoologist and soldier, who was a member of the Rothschild family. As a Zionist leader, he was present ...
from
Yunnan
Yunnan , () is a landlocked province in the southwest of the People's Republic of China. The province spans approximately and has a population of 48.3 million (as of 2018). The capital of the province is Kunming. The province borders the ...
, breeds in southwest China and parts of
India
India, officially the Republic of India ( Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the ...
,
Burma
Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicating /r/ even in British English although only some British English speakers pronounce r at the end of syllables. As John C. Wells, Joh ...
Vietnam
Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making it ...
. In a large part of
Sichuan
Sichuan (; zh, c=, labels=no, ; zh, p=Sìchuān; alternatively romanized as Szechuan or Szechwan; formerly also referred to as "West China" or "Western China" by Protestant missions) is a province in Southwest China occupying most of th ...
''intensior'' intergrades with ''P. c. rutilans'', and a number of subspecies names have been proposed for the intergrades. The
nominate subspecies
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics ( morphology), but that can successfully interbreed. Not all spec ...
''cinnamomeus'', described by Gould from the northwestern Himalayas, breeds from northern
Arunachal Pradesh
Arunachal Pradesh (, ) is a state in Northeastern India. It was formed from the erstwhile North-East Frontier Agency (NEFA) region, and became a state on 20 February 1987. It borders the states of Assam and Nagaland to the south. It share ...
to
Nuristan
Nuristan, also spelled as Nurestan or Nooristan (Dari: ; Kamkata-vari: ), is one of the 34 provinces of Afghanistan, located in the eastern part of the country. It is divided into seven districts and is Afghanistan's least populous province, w ...
in
Afghanistan
Afghanistan, officially the Islamic Emirate of Afghanistan,; prs, امارت اسلامی افغانستان is a landlocked country located at the crossroads of Central Asia and South Asia. Referred to as the Heart of Asia, it is bord ...
.
Description
The russet sparrow is a small chunky bird, with
plumage
Plumage ( "feather") is a layer of feathers that covers a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage differ between species and subspecies and may vary with age classes. Within species, ...
warm
rufous
Rufous () is a color that may be described as reddish-brown or brownish- red, as of rust or oxidised iron. The first recorded use of ''rufous'' as a color name in English was in 1782. However, the color is also recorded earlier in 1527 as a di ...
in overall colour. It is a medium-sized sparrow at and . It has a thick bill suited to eating seeds, which is black on the breeding male, horn-coloured on the non-breeding male, and yellowish with a dark tip on the female. Wingspans for males range between and those for females from . Tail, bill, and tarsus lengths are , , and , respectively.
Measurements for the russet sparrow vary geographically, between the three subspecies, and also within the Himalayan subspecies ''cinnamomeus''. The subspecies ''cinnamomeus'' is generally larger than the others, and within this form there is a tendency for birds at higher altitudes to be larger, and a clinal variation in size with the smallest birds in the west of the range and the largest in the east.
The iris is
chestnut
The chestnuts are the deciduous trees and shrubs in the genus ''Castanea'', in the beech family Fagaceae. They are native to temperate regions of the Northern Hemisphere.
The name also refers to the edible nuts they produce.
The unrelate ...
in colour. The legs of both sexes are pale brown to pinkish-brown. The flight of all sparrows is swift, and that of the russet sparrow is described as swifter and more direct than that of the
Eurasian tree sparrow
The Eurasian tree sparrow (''Passer montanus'') is a passerine bird in the sparrow family with a rich chestnut crown and nape, and a black patch on each pure white cheek. The sexes are similarly plumaged, and young birds are a duller versio ...
.
Plumage
The sexes differ, or are
dimorphic
Dimorphism or dimorphic may refer to:
Science
* Dimorphic root systems, plant roots with two distinctive forms for two separate functions
* Sexual dimorphism, a phenotypic difference between males and females of the same species
* Nuclear dimorp ...
, in their plumage, and have a similar pattern to that in the corresponding sex of
house sparrow
The house sparrow (''Passer domesticus'') is a bird of the sparrow family Passeridae, found in most parts of the world. It is a small bird that has a typical length of and a mass of . Females and young birds are coloured pale brown and grey, an ...
. There is some variation between the three subspecies, especially in the colouration of the underparts. Birds of the subspecies ''rutilans'' are off-white on their cheeks and the sides of their necks, and have pale grey underparts. Birds of the subspecies ''intensior'' have a pale yellow wash on their underparts and cheeks, as well as darker upperparts, while those of the subspecies ''cinnamomeus'' have a heavy yellow tinge to their underparts.
Moult
In biology, moulting (British English), or molting (American English), also known as sloughing, shedding, or in many invertebrates, ecdysis, is the manner in which an animal routinely casts off a part of its body (often, but not always, an outer ...
Himachal Pradesh
Himachal Pradesh (; ; "Snow-laden Mountain Province") is a state in the northern part of India. Situated in the Western Himalayas, it is one of the thirteen mountain states and is characterized by an extreme landscape featuring several peak ...
. In Sakhalin, moult occurs in August and September, between the breeding season and migration. In Himachal Pradesh, aviculturalist G. A. Perreau observed captive and wild birds and reported that they were yellow from December to spring and whitish during the remainder of the year, a pattern which may be atypical.
The breeding male is bright russet or cinnamon red on its upperparts from its
crown
A crown is a traditional form of head adornment, or hat, worn by monarchs as a symbol of their power and dignity. A crown is often, by extension, a symbol of the monarch's government or items endorsed by it. The word itself is used, partic ...
to its rump, with a black streaking on its mantle. It has a small black bib and black around its eye, separated from the russet of its crown by a very thin white
supercilium
The supercilium is a plumage feature found on the heads of some bird species. It is a stripe which runs from the base of the bird's beak above its eye, finishing somewhere towards the rear of the bird's head.Dunn and Alderfer (2006), p. 10 Also k ...
, a stripe running from the bill to the rear of the head. The side of its neck and cheek are off-white, and its underparts are pale grey or washed with yellow, varying geographically. Shoulders and greater coverts are chestnut, and its median coverts are black at the base with white at the tips. The rest of the wing is light brown with black tinges. Its tail is blackish brown, edged with ashy brown. The non-breeding male differs little from the breeding male, being paler with more orange upperparts. The only species with which the male is easily confused is the Eurasian tree sparrow, which differs in its black cheek spot and brown back.
The female has mostly pale brown upperparts, and pale grey underparts, so it resembles the female house sparrow. It differs from the house sparrow in its slightly darker, russet-tinged plumage. It has a conspicuous cream supercilium from above its eye nearly around its head, and a bold dark brown stripe through its eye. It has mostly greyish brown wings and a back streaked with black and buff. The juvenile is similar to the female, though more pale and sandy. As the male reaches its first winter, it resembles the adult, differing in less bold chestnut and a dusky bib.
Voice
The russet sparrow's vocalisations are described by most sources as "the sweetest and most musical" of any sparrow. Its basic call is a ' or ', similar to that of other sparrows. This call is monosyllabic, unlike the house sparrow's ''chirrup'' call, and is softer than that of the other sparrows. This call is given as a flight call, or by displaying males. Recorded variations include a ' given by males at the nest and a trilled '. Sometimes the male strings calls together and sings them in a strident tone, to create a sort of short song, transcribed as ' or '. The song is interspersed with sibilant ' notes similar to those of the white wagtail. A thin ' vocalisation not unlike that of an
Indian robin
The Indian robin (''Copsychus fulicatus'')Rasmussen & Anderton emend the species epithet from ''fulicata'' to ''fulicatus'' since ''Saxicola'' is masculine and the ''-oides'' ending is always masculine according to ICZN Code 30.1.4.4ICZN Code. See ...
has been reported, but the context of this call is unrecorded. During territorial disputes, males give a rapid ' call.
Distribution and habitat
The russet sparrow is found in parts of eastern Asia and in the Himalayas. It is not known whether its distribution is continuous between these two areas, since the political sensitivity of the
Brahmaputra River
The Brahmaputra is a trans-boundary river which flows through Tibet, northeast India, and Bangladesh. It is also known as the Yarlung Tsangpo in Tibetan, the Siang/Dihang River in Arunachali, Luit in Assamese, and Jamuna River in Bangla. I ...
's valley near the China-India border makes the area less accessible to ornithologists. In the Himalayas the russet sparrow breeds from the far northeast of India through southeastern
Tibet
Tibet (; ''Böd''; ) is a region in East Asia, covering much of the Tibetan Plateau and spanning about . It is the traditional homeland of the Tibetan people. Also resident on the plateau are some other ethnic groups such as Monpa people, ...
,
Bhutan
Bhutan (; dz, འབྲུག་ཡུལ་, Druk Yul ), officially the Kingdom of Bhutan,), is a landlocked country in South Asia. It is situated in the Eastern Himalayas, between China in the north and India in the south. A mountai ...
,
Sikkim
Sikkim (; ) is a state in Northeastern India. It borders the Tibet Autonomous Region of China in the north and northeast, Bhutan in the east, Province No. 1 of Nepal in the west and West Bengal in the south. Sikkim is also close to the Siligu ...
,
Nepal
Nepal (; ne, नेपाल ), formerly the Federal Democratic Republic of Nepal ( ne,
सङ्घीय लोकतान्त्रिक गणतन्त्र नेपाल ), is a landlocked country in South Asia. It is ma ...
,
Uttarakhand
Uttarakhand ( , or ; , ), also known as Uttaranchal ( ; List of renamed places in India, the official name until 2007), is a States and union territories of India, state in the North India, northern part of India. It is often referred to as t ...
, and
Himachal Pradesh
Himachal Pradesh (; ; "Snow-laden Mountain Province") is a state in the northern part of India. Situated in the Western Himalayas, it is one of the thirteen mountain states and is characterized by an extreme landscape featuring several peak ...
Nuristan
Nuristan, also spelled as Nurestan or Nooristan (Dari: ; Kamkata-vari: ), is one of the 34 provinces of Afghanistan, located in the eastern part of the country. It is divided into seven districts and is Afghanistan's least populous province, w ...
in Afghanistan. Here, the russet sparrow makes short movements to lower altitudes between November and April in many areas.
In eastern Asia, the russet sparrow is found in
Kuril Islands
The Kuril Islands or Kurile Islands (; rus, Кури́льские острова́, r=Kuril'skiye ostrova, p=kʊˈrʲilʲskʲɪjə ɐstrɐˈva; Japanese: or ) are a volcanic archipelago currently administered as part of Sakhalin Oblast in the ...
, a small part of mainland
Russia
Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-eigh ...
, Japan, southern
Korea
Korea ( ko, 한국, or , ) is a peninsular region in East Asia. Since 1945, it has been divided at or near the 38th parallel, with North Korea (Democratic People's Republic of Korea) comprising its northern half and South Korea (Republi ...
, and part of northern China, where it is mostly migratory. It is distributed through southern China and
Taiwan
Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the northe ...
, and the mountainous parts of
Burma
Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicating /r/ even in British English although only some British English speakers pronounce r at the end of syllables. As John C. Wells, Joh ...
Vietnam
Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making it ...
, where it is mostly resident. The russet sparrow also occurs as a winter visitor in southern Japan, the further south of China, and northern
Thailand
Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is b ...
. In eastern Asia, the autumn migration occurs between August and November.
The russet sparrow appears to be abundant in most habitats across most of its very large range, and in the some areas it is among the most common birds. In Southeast Asia, its range has contracted at lower elevations due to
global warming
In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate variability and change, Climate change in a broader sense also includes ...
, but it has also moved higher at high elevations and it remains common. Although its global population has not been quantified, it is assessed for the
IUCN Red List
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biol ...
as
least concern
A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. Th ...
for global extinction.
Breeding takes place in
mountain
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher t ...
s and uplands across most of the range. This preference for high altitudes is influenced by latitude: in the farthest south of its range it never breeds below
above mean sea level
Height above mean sea level is a measure of the Vertical position, vertical distance (height, elevation or altitude) of a location in reference to a historic mean sea level taken as a vertical datum. In geodesy, it is formalized as ''orthometric h ...
, but in the northernmost part of its range it often breeds by the sea. In eastern Asia, the russet sparrow prefers light
woodland
A woodland () is, in the broad sense, land covered with trees, or in a narrow sense, synonymous with wood (or in the U.S., the '' plurale tantum'' woods), a low-density forest forming open habitats with plenty of sunlight and limited shade (see ...
, but it is sometimes found in towns and agricultural areas. In Sakhalin, it breeds mostly in
riparian forest
A riparian forest or riparian woodland is a forested or wooded area of land adjacent to a body of water such as a river, stream, pond, lake, marshland, estuary, canal, sink or reservoir.
Etymology
The term riparian comes from the Latin word ...
. In Hokkaidō, the russet sparrow finds a greater food supply for its young in more remote forests, and has greater reproductive success.
In the Himalayas, it is strongly associated with terrace cultivation, and it probably only spread to the Himalayas when these agricultural practices arrived 3000 to 4000 years ago. In towns where it occurs alongside the house or tree sparrow, it is found in gardens and less built up areas. In those
hill station
A hill station is a town located at a higher elevation than the nearby plain or valley. The term was used mostly in colonial Asia (particularly in India), but also in Africa (albeit rarely), for towns founded by European colonialists as refuges ...
s in India where both the house and the russet sparrow occur, the house sparrow breeds around more-built up areas and bazaars, whereas the russet sparrow is "rather more up market at the larger houses with gardens and open spaces". In towns where it is the only sparrow, it is not dependent on trees, breeding around houses and eating scraps in streets. In the winter, migratory birds occur in open cultivated land and riverine
grassland
A grassland is an area where the vegetation is dominated by grasses (Poaceae). However, sedge (Cyperaceae) and rush ( Juncaceae) can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur natur ...
s, but are never far from shrubs or trees.
Behaviour
In many aspects of its behaviour, the russet sparrow is similar to the house and Eurasian tree sparrows. Like them, it feeds on the ground, but spends most of its time perching on branches. Unlike those species, it prefers open, exposed branches for perching. The russet sparrow is described as shy and wary by some observers, but J. Denis Summers-Smith found it approachable in Indian hill stations. Flocking russet sparrows feed close to the ground, moving forward as birds from the rear of a flock move to the front, in what is called "roller feeding".
Outside its breeding season, the russet sparrow is gregarious and forms flocks to find food, though it infrequently associates with other birds. Wintering flocks tend to keep away from human habitation. The russet sparrow is also social at night during the winter, and it forms large communal roosts in trees and bushes. In the breeding season, the female roosts in the nests and the male nests in foliage nearby.
The adult russet sparrow is mostly a seed-eater, eating the seeds of herbs and weeds as well as
rice
Rice is the seed of the grass species '' Oryza sativa'' (Asian rice) or less commonly '' Oryza glaberrima'' (African rice). The name wild rice is usually used for species of the genera '' Zizania'' and ''Porteresia'', both wild and domestica ...
,
barley
Barley (''Hordeum vulgare''), a member of the grass family, is a major cereal grain grown in temperate climates globally. It was one of the first cultivated grains, particularly in Eurasia as early as 10,000 years ago. Globally 70% of barley ...
Berries
A berry is a small, pulpy, and often edible fruit. Typically, berries are juicy, rounded, brightly colored, sweet, sour or tart, and do not have a stone or pit, although many pips or seeds may be present. Common examples are strawberries, rasp ...
, such as those of the kingore (certain ''
Berberis
''Berberis'' (), commonly known as barberry, is a large genus of deciduous and evergreen shrubs from tall, found throughout temperate and subtropical regions of the world (apart from Australia). Species diversity is greatest in South America an ...
'' spp.), are also eaten when available. Nestlings are fed mostly on
insect
Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs ...
s, especially
caterpillar
Caterpillars ( ) are the larva, larval stage of members of the order Lepidoptera (the insect order comprising butterfly, butterflies and moths).
As with most common names, the application of the word is arbitrary, since the larvae of sawfly ...
s and
larva
A larva (; plural larvae ) is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle.
Th ...
l
beetle
Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 describ ...
s obtained on trees and flying insects caught by aerial pursuit. During the breeding season adults also consume insects.
Mortality rates in the russet sparrow have not been studied, but it is known that many young birds die from '' Isospora'' infections, to which the bird has little resistance. Other recorded parasites of the russet sparrow include '' Protocalliphora'' blowflies, and '' Menacanthus'' chewing lice.
Breeding
The russet sparrow's
breeding season
Seasonal breeders are animal species that successfully mate only during certain times of the year. These times of year allow for the optimization of survival of young due to factors such as ambient temperature, food and water availability, and ch ...
is short, lasting about three months. The Himalayan subspecies ''cinnamomeus'' has been recorded breeding from April to August, the nominate subspecies breeds from May to July, and the subspecies ''intensior'' is believed to breed in March. During its breeding season, the russet sparrow is not gregarious, and its nests are dispersed uniformly rather than clustered. Its nests are most frequently built in tree cavities, often disused
woodpecker
Woodpeckers are part of the bird family Picidae, which also includes the piculets, wrynecks, and sapsuckers. Members of this family are found worldwide, except for Australia, New Guinea, New Zealand, Madagascar, and the extreme polar region ...
nests. The russet sparrow has been recorded breeding alongside the Eurasian tree sparrow and white wagtail in
black kite
The black kite (''Milvus migrans'') is a medium-sized bird of prey in the family Accipitridae, which also includes many other diurnal raptors. It is thought to be the world's most abundant species of Accipitridae, although some populations ha ...
nests, taking advantage of the territorial defence of the kites to avoid nest predation. Other nest locations include the eaves of thatched roofs, stone walls and embankments, and electric junction boxes. In
Bhutan
Bhutan (; dz, འབྲུག་ཡུལ་, Druk Yul ), officially the Kingdom of Bhutan,), is a landlocked country in South Asia. It is situated in the Eastern Himalayas, between China in the north and India in the south. A mountai ...
, it nests in holes in the outer walls of monasteries, often alongside the Eurasian tree sparrow. In Sakhalin, it will sometimes build free-standing nests in bushes. The russet sparrow also uses the disused nests of the red-rumped swallow, and a pair of russet sparrows has been recorded attempting to oust a pair of
black-crested tit
The black-crested tit (''Periparus ater melanolophus''), also known as the spot-winged tit, is a bird in the family Paridae. It was formerly considered a species, but is now widely considered a subspecies of the coal tit.
Distribution and h ...
s from their nest.
The male chooses the nest site, and uses it for his
courtship display
A courtship display is a set of display behaviors in which an animal, usually a male, attempts to attract a mate; the mate exercises choice, so sexual selection acts on the display. These behaviors often include ritualized movement ("dances"), v ...
, spending much time calling nearby. When a female comes near a male at his nest the male begins to display by raising his head, drooping his wings, pushing his chest forward, and lowering his tail. He then bows up and down in front of the female, who will lunge and then fly away if unreceptive. Both sexes take part in building the nest, which consists of a loose, untidy bunch of dry grass which fills the nesting cavity, lined with fur and feathers for warmth.Eggs are elongated ovals, with a fine texture and a slight gloss. They are whitish in overall colour with a grey tinge and brown spots, streaks, or blotches. The average size of the egg is 19.2×14.2 millimetres (0.75×0.55 in). Eggs are similar to those of the Eurasian tree sparrow, differing in a duller colour and more narrow shape, though they cannot be separated from those of the other sparrows with certainty. Two clutches of four or sometimes five or six eggs are laid in a year. In Hokkaidō, clutches are laid between early May and early July, with two peaks in laying around mid May and late June. Both sexes incubate and feed the young, with the male often being more active in feeding the nestlings. In Hokkaidō, nestlings hatch weighing about , and fledge fourteen or fifteen days after hatching, weighing . The
common cuckoo
The common cuckoo (''Cuculus canorus'') is a member of the cuckoo order of birds, Cuculiformes, which includes the roadrunners, the anis and the coucals.
This species is a widespread summer migrant to Europe and Asia, and winters in Africa. It ...
has been recorded in old literature as a
brood parasite
Brood parasites are animals that rely on others to raise their young. The strategy appears among birds, insects and fish. The brood parasite manipulates a host, either of the same or of another species, to raise its young as if it were its ow ...
of the russet sparrow.
Relationships with humans
In parts of the range, the russet sparrow inhabits towns, and in most of its range, it occurs near cultivation, and is a minor pest of agriculture. Though it damages crops, it also feeds its nestlings largely on insect pests. In China, the russet sparrow has been recorded as a captive bird, kept with the Eurasian tree sparrow. In Japan it was eaten in the 1870s and sold in the Yokohama game market. The russet sparrow is known well enough in the Himalayas that in most languages it has a different vernacular name from the Eurasian tree sparrow. Examples of these vernacular names include ''lal gouriya'' in
Hindi
Hindi (Devanāgarī: or , ), or more precisely Modern Standard Hindi (Devanagari: ), is an Indo-Aryan languages, Indo-Aryan language spoken chiefly in the Hindi Belt region encompassing parts of North India, northern, Central India, centr ...
and ''kang-che-go-ma'' in Tibetan. The Japanese artist
Hokusai
, known simply as Hokusai, was a Japanese ukiyo-e artist of the Edo period, active as a painter and printmaker. He is best known for the woodblock print series '' Thirty-Six Views of Mount Fuji'', which includes the iconic print ''The Great ...
portrayed the russet sparrow, and due to this, it has appeared on
postage stamp
A postage stamp is a small piece of paper issued by a post office, postal administration, or other authorized vendors to customers who pay postage (the cost involved in moving, insuring, or registering mail), who then affix the stamp to the ...
s featuring Japanese art in Japan,
The Gambia
The Gambia,, ff, Gammbi, ar, غامبيا officially the Republic of The Gambia, is a country in West Africa
West Africa or Western Africa is the westernmost region of Africa. The United Nations defines Western Africa as the 16 c ...