The lesser horned owl or Magellanic horned owl (''Bubo magellanicus'') is a large
owl
Owls are birds from the order Strigiformes (), which includes over 200 species of mostly solitary and nocturnal birds of prey typified by an upright stance, a large, broad head, binocular vision, binaural hearing, sharp talons, and feathers a ...
of the genus ''
Bubo
A bubo (Greek βουβών, ''boubṓn'', 'groin') is adenitis or inflammation of the lymph nodes and is an example of reactive infectious lymphadenopathy.
Classification
Buboes are a symptom of bubonic plague and occur as painful swellings in ...
'' found in southern
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a considerably smaller portion in the Northern Hemisphere. It can also be described as the southern Subregion#Americas, subregion o ...
, extending north to the central
Andes
The Andes ( ), Andes Mountains or Andean Mountain Range (; ) are the List of longest mountain chains on Earth, longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range ...
. It has traditionally been classified as a
subspecies
In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), morpholog ...
of the
great horned owl
The great horned owl (''Bubo virginianus''), also known as the tiger owl (originally derived from early naturalists' description as the "winged tiger" or "tiger of the air") or the hoot owl, is a large owl native to the Americas. It is an extreme ...
(''Bubo virginianus''), but is now treated as a separate species based on differences in voice and size and because of the
genetic distance
Genetic distance is a measure of the genetics, genetic divergence between species or between population#Genetics, populations within a species, whether the distance measures time from common ancestor or degree of differentiation. Populations with ...
between the two.
It is about long with birds in the north of the range being largest. It has broad wings and a large head with two "ear" tufts. The
plumage
Plumage () 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, there can b ...
is mainly grey-brown but is quite variable in colour. The underparts are pale with narrow grey-brown bars and the breast has dark blotches. There is a black border to the facial disc and white stripes above the yellow eyes. The great horned owl is similar but larger with stronger feet and bill, broader bars on the underparts and longer ear-tufts.
The deep hooting call consists of a double-note followed by a loud, vibrating note. The bird's local name ''tucúquere'' is imitative of the call.
The range extends from central
Peru
Peru, officially the Republic of Peru, is a country in western South America. It is bordered in the north by Ecuador and Colombia, in the east by Brazil, in the southeast by Bolivia, in the south by Chile, and in the south and west by the Pac ...
and western
Bolivia
Bolivia, officially the Plurinational State of Bolivia, is a landlocked country located in central South America. The country features diverse geography, including vast Amazonian plains, tropical lowlands, mountains, the Gran Chaco Province, w ...
southwards through
Chile
Chile, officially the Republic of Chile, is a country in western South America. It is the southernmost country in the world and the closest to Antarctica, stretching along a narrow strip of land between the Andes, Andes Mountains and the Paci ...
and western
Argentina
Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...
as far as
Tierra del Fuego
Tierra del Fuego (, ; Spanish for "Land of Fire", rarely also Fireland in English) is an archipelago off the southernmost tip of the South America, South American mainland, across the Strait of Magellan.
The archipelago consists of the main is ...
. The bird occurs in a variety of habitats including open
forest
A forest is an ecosystem characterized by a dense ecological community, community of trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, ...
,
scrubland
Shrubland, scrubland, scrub, brush, or bush is a plant community characterized by vegetation dominance (ecology), dominated by shrubs, often also including grasses, herbaceous plant, herbs, and geophytes. Shrubland may either occur naturally o ...
,
farmland
Agricultural land is typically land ''devoted to'' agriculture, the systematic and controlled use of other forms of lifeparticularly the rearing of livestock and production of cropsto produce food for humans. It is generally synonymous with bot ...
and
grassland
A grassland is an area where the vegetation is dominance (ecology), dominated by grasses (Poaceae). However, sedge (Cyperaceae) and rush (Juncaceae) can also be found along with variable proportions of legumes such as clover, and other Herbaceo ...
. It hunts over open country, mainly at night.
Rodent
Rodents (from Latin , 'to gnaw') are mammals of the Order (biology), order Rodentia ( ), which are characterized by a single pair of continuously growing incisors in each of the upper and Mandible, lower jaws. About 40% of all mammal specie ...
s make up most of the diet but other mammals,
bird
Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a fou ...
s, reptiles and
insect
Insects (from Latin ') are Hexapoda, hexapod invertebrates of the class (biology), class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (Insect morphology#Head, head, ...
s are also taken. The species nests on cliffs or between rocks. The two or three eggs are incubated by the female, who is fed by the male.
[Holt, D.W., Berkley, R., Deppe, C., Enríquez Rocha, P., Petersen, J.L., Rangel Salazar, J.L., Segars, K.P., Wood, K.L. & Marks, J.S. (2019)]
Magellanic Horned Owl (''Bubo magellanicus'')
In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). ''Handbook of the Birds of the World Alive''. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/55007 on 13 February 2019).
References
Further reading
*Jaramillo, Alvaro; Burke, Peter & Beadle, David (2003) ''Field Guide to the Birds of Chile'', Christopher Helm, London.
*Marcot, Bruce G. (2006)
' Accessed 03/09/07.
*Peterson, Alan P. (ed.) (1999)
Zoological Nomenclature Resource (Zoonomen).' Accessed 03/09/07.
External links
*
{{Taxonbar, from=Q1883973
lesser horned owl
Birds of the Puna grassland
Birds of Argentina
Birds of Chile
Birds of Patagonia
lesser horned owl