The palmchat (''Dulus dominicus'') is a small, long-tailed

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 Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweig ...

, the only species in the genus ''Dulus'' and the family Dulidae

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...

to the

Caribbean The Caribbean (, ) ( es, El Caribe; french: la Caraïbe; ht, Karayib; nl, De Caraïben) is a region of the Americas that consists of the Caribbean Sea, its islands (some surrounded by the Caribbean Sea and some bordering both the Caribbean ...

island of

Hispaniola Hispaniola (, also ; es, La Española; Latin and french: Hispaniola; ht, Ispayola; tnq, Ayiti or Quisqueya) is an island in the Caribbean that is part of the Greater Antilles. Hispaniola is the most populous island in the West Indies, and th ...

(split between the

Dominican Republic The Dominican Republic ( ; es, República Dominicana, ) is a country located on the island of Hispaniola in the Greater Antilles archipelago of the Caribbean region. It occupies the eastern five-eighths of the island, which it shares with ...

and

Haiti Haiti (; ht, Ayiti ; French: ), officially the Republic of Haiti (); ) and formerly known as Hayti, is a country located on the island of Hispaniola in the Greater Antilles archipelago of the Caribbean Sea, east of Cuba and Jamaica, and s ...

). It is related to the

waxwing The waxwings are three species of passerine birds classified in the genus ''Bombycilla''. They are pinkish-brown and pale grey with distinctive smooth plumage in which many body feathers are not individually visible, a black and white eyestri ...

s, family

Bombycillidae The waxwings are three species of passerine birds classified in the genus ''Bombycilla''. They are pinkish-brown and pale grey with distinctive smooth plumage in which many body feathers are not individually visible, a black and white eyestri ...

. Its name reflects its strong association with palms for feeding, roosting, and nesting. The palmchat is the

national bird This is a list of national birds, including official birds of overseas territories and other states described as nations. Most species in the list are officially designated. Some species hold only an "unofficial" status. National birds See al ...

of the

Taxonomy

In 1760 the French zoologist

Mathurin Jacques Brisson Mathurin Jacques Brisson (; 30 April 1723 – 23 June 1806) was a French zoologist and natural philosopher. Brisson was born at Fontenay-le-Comte. The earlier part of his life was spent in the pursuit of natural history; his published wo ...

included a description of the palmchat in his ''Ornithologie'' based on a specimen collected from the French colony of

Saint-Domingue Saint-Domingue () was a French colony in the western portion of the Caribbean island of Hispaniola, in the area of modern-day Haiti, from 1659 to 1804. The name derives from the Spanish main city in the island, Santo Domingo, which came to ref ...

, modern Haiti. He used the French name ''Le tangara de S. Dominigue'' and the Latin ''Tangara Dominicensis''. The two stars (**) at the start of the section indicates that Brisson based his description on the examination of a specimen. Although Brisson coined Latin names, these do not conform to the binomial system and are not recognised by 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 ...

. When the Swedish naturalist

Carl Linnaeus Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, ...

updated his ''

Systema Naturae ' (originally in Latin written ' with the ligature æ) is one of the major works of the Swedish botanist, zoologist and physician Carl Linnaeus (1707–1778) and introduced the Linnaean taxonomy. Although the system, now known as binomial ...

'' for the twelfth edition in 1766, he added 240 species that had been previously described by Brisson, with one of them being the palmchat. Linnaeus included a brief description, coined 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, bo ...

''Tanagra dominica'' and cited Brisson's work. The palmchat is the only species placed in the genus ''Dulus'' that was introduced by the French ornithologist

Louis Jean Pierre Vieillot Louis Pierre Vieillot (10 May 1748, Yvetot – 24 August 1830, Sotteville-lès-Rouen) was a French ornithologist. Vieillot is the author of the first scientific descriptions and Linnaean names of a number of birds, including species he collec ...

in 1816. The species is

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispe ...

Description

Palmchats are about in length. They are olive-brown above, and heavily streaked with brown below. Their rumps, as well as the edges of their primary

feather Feathers are epidermal growths that form a distinctive outer covering, or plumage, on both avian (bird) and some non-avian dinosaurs and other archosaurs. They are the most complex integumentary structures found in vertebrates and a premie ...

s, are dark yellow-green. They have strong yellow bills and russet eyes. They lack the soft silky

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, ...

of the waxwings or

silky-flycatcher The silky-flycatchers are a small family, Ptiliogonatidae, of passerine birds. The family contains only four species in three genera. They were formerly lumped with waxwings and hypocolius in the family Bombycillidae, and they are listed in tha ...

s. Adults show no

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 ...

; immature birds have dark throats.

Distribution and habitat

The species is endemic to the island of Hispaniola (in both Haiti and the Dominican Republic), and the adjacent

Saona Saona Island ( es, Isla Saona) is a 110 square kilometer tropical island located off the south-east coast in Dominican Republic's La Altagracia province. It is a government-protected nature reserve and is part of '' Parque Nacional Cotubanamá''. ...

and

Gonâve Island Gonâve Island or Zile Lagonav (french: Île de la Gonâve, ; also ''La Gonâve'') is an island of Haiti located west-northwest of Port-au-Prince in the Gulf of Gonâve. It is the largest of the Hispaniolan satellite islands. The island is an a ...

s, where it is common and widespread. It inhabits areas from sea level to 1500 m asl where palm

savanna A savanna or savannah is a mixed woodland- grassland (i.e. grassy woodland) ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground ...

s can be found, or other open areas with scattered trees. Where its food trees are present, it has adapted well to city parks and gardens.

Behaviour

Palmchats are very sociable birds, often seen in small flocks containing several pairs, which will roost closely together with their bodies in contact.

Breeding

The breeding season is mainly from March to June. The birds build large, messy, communal

nests A nest is a structure built for certain animals to hold eggs or young. Although nests are most closely associated with birds, members of all classes of vertebrates and some invertebrates construct nests. They may be composed of organic materi ...

of twigs in the crowns of palms (mainly royal palms ''Roystonea'' sp.). Occasionally, in the absence of palms, other trees or even

telephone pole A utility pole is a column or post typically made out of wood used to support overhead power lines and various other public utilities, such as electrical cable, fiber optic cable, and related equipment such as transformers and street lights. It ...

s may be used. The whole nesting structure may be up to 2 m across, containing up to 30 adjoining nests with their own separate chambers and entrances. The females lay clutches of 2-4 thickly spotted, grey-purple

eggs Humans and human ancestors have scavenged and eaten animal eggs for millions of years. Humans in Southeast Asia had domesticated chickens and harvested their eggs for food by 1,500 BCE. The most widely consumed eggs are those of fowl, especial ...

Food

Palmchats feed on

fruit In botany, a fruit is the seed-bearing structure in flowering plants that is formed from the ovary after flowering. Fruits are the means by which flowering plants (also known as angiosperms) disseminate their seeds. Edible fruits in partic ...

s and berries, including those of

palm Palm most commonly refers to: * Palm of the hand, the central region of the front of the hand * Palm plants, of family Arecaceae **List of Arecaceae genera * Several other plants known as "palm" Palm or Palms may also refer to: Music * Palm (ba ...

s and of the Gumbo-limbo tree, as well as on

flower A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Angiospermae). The biological function of a flower is to facilitate reproduction, usually by providing a mechanis ...

s, especially those of epiphytic

orchid Orchids are plants that belong to the family Orchidaceae (), a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Along with the Asteraceae, they are one of the two largest families of floweri ...

Voice

They are voluble and noisy birds, with a large repertoire of gurgling and cheeping sounds constantly used in their social behaviour. With their loud whistles, they are able to imitate the calls of hawks and kestrels which may be a surprise coming from their tiny bodies. They are typically classified as song birds, but are hardly ever heard chirping or making any sounds that can be made out as a song 0

Conservation

The palmchat is a common species within its range of about , and highly adaptable. As it is not approaching the thresholds for the population decline criterion of the IUCN Red List (i.e., declining more than 30% in ten years or three generations), it has been evaluated as being of Least Concern.

References

10. ref Encyclopedia.com. (2022, March 19). ." Grzimek's Animal Life Encyclopedia. . encyclopedia.com. 28 Feb. 2022 .Encyclopedia.com. Retrieved March 18, 2022, from https://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/palmchats-dulidae

External links

Don Roberson's Bird Families of the World
{{Taxonbar, from=Q845457 Birds described in 1766 Taxa named by Carl Linnaeus Endemic birds of Hispaniola Birds of Hispaniola Endemic birds of the Caribbean Endemic fauna of Hispaniola Birds of the Dominican Republic Birds of Haiti Higher-level bird taxa restricted to the West Indies National symbols of the Dominican Republic Bombycilloidea Extant Miocene first appearances