White-crested elaenia | |
---|---|
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Passeriformes |
Family: | Tyrannidae |
Genus: | Elaenia |
Species: | E. albiceps |
Binomial name | |
Elaenia albiceps (D'Orbigny & Lafresnaye, 1837) | |
Subspecies | |
See text | |
The white-crested elaenia (Elaenia albiceps) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It has several subspecies breeding across southern and western parts of South America. Southern birds migrate north in winter.
Its natural habitats are temperate forests, subtropical or tropical moist montane forests, subtropical or tropical high-altitude shrubland, and heavily degraded former forest.
The white-crested elaenia easily is recognizable as an elaenia by the combination of drab plumage (primarily dull green above, and whitish below); wings with conspicuous wing bars (pale tips to the greater and median wing coverts); slightly crested appearance, with a semi-concealed white center to the crown; and upright posture. small-billed elaenia, lesser elaenia and sierran elaenia cannot always be distinguished in the field. The length of the species ranges from 13.5 to 15 cm (5.3–5.9 in) and weight is 12.5–24.3 grams (0.44–0.86 oz), with an average of 16.3 grams (0.57 oz).
At least five subspecies are recognized: [2]
The white-crested elaenia is a permanent resident in the central and southwestern coastal Andean region of South America in Peru, Ecuador, Bolivia, and northernmost Chile. Also, in most of Argentina, mostly western, and southern and central Chile, Tierra del Fuego, it is also resident.
To the north and east in northeast Brazil, the Amazon Basin, and in the Amazonian Andes regions of eastern Colombia, Peru, and northern Bolivia southeastwards into eastern Brazil, white-crested elaenia is a non-breeding resident bird, in the austral winter. In the entirety of South America, two thirds of its range is as a non-breeding migratory species. It is a vagrant to the Falkland Islands and in 2008 a bird was found in Texas, a potential first for the United States and North America. A second bird was reported in Chicago in 2012. [4]
Like many other species of Elaenia, white-crested elaenia is found in a variety of wooded habitats. Throughout most of its breeding distribution in the Andes, white-crested elaenia is found at forest edge, in second growth, and in scrub. In at least some areas, it breeds in drier intermontane valleys, rather than the more humid forests occupied by Sierran elaenia, but the habitat relationships between the two species have not been studied in detail. In northwestern Argentina, where white-crested elaenia overlaps with small-billed elaenia, there is some degree of segregation by habitat: small-billed elaenia breeds in tall woods, and primarily below 1,500 m (4,900 ft), whereas white-crested elaenia occurs in smaller trees and in agricultural areas, at elevations from 1,500 to 3,500 metres (4,900 to 11,500 ft).
It regularly consumes small fruit, at least when not breeding, but takes small insects as well. It also eats a large variety of foods such as grass, berries, seeds, and nuts. The white-crested elaenia typically is solitary, but, at least when not breeding, may congregate with other frugivores at fruiting trees. Aggregations of up to 100 individuals have been reported during migration.
The oldest known white-crested elaenia from banding studies was eight years and two months old, though it is uncertain whether this represents the maximum potential longevity of the species. [5]
The chivi vireo is a small South American songbird in the family Vireonidae. It was formerly considered a subspecies of the red-eyed vireo. It is usually green to yellow-green in color with off-white underparts, and a gray crown. It has a whitish supercilium extending over its ear coverts, and its lores are dull gray in color. The chivi vireo has nine subspecies. It is found throughout most of northern, eastern and central South America, only being absent from southern Chile and southern Argentina. It inhabits multiple types of habitat across its range, and appears to adjust well to slightly disturbed habitat. The chivi vireo is mainly resident, but at least two of the subspecies inhabiting the south of its range are known to be migratory.
The buff-fronted owl is a small owl. It is found in widely separated areas in every South American country except French Guiana and Suriname.
The Andean tinamou is a tinamou, found commonly in high-altitude shrubland, in the Andes of South America.
The collared inca is a species of hummingbird found in humid Andean forests from western Venezuela, through Colombia and Ecuador, to Peru and Bolivia. It is very distinctive and unique in having a white chest-patch and white on the tail. Like other hummingbirds it takes energy from flower nectar, while the plant benefits from the symbiotic relationship by being pollinated. Its protein source is small arthropods such as insects. It is normally solitary and can be found at varying heights above the ground, often in the open.
The Andean swift is a species of bird in subfamily Apodinae of the swift family Apodidae. It is found in Argentina, Bolivia, Chile, and Peru.
The mountain parakeet, also known as the golden-fronted parakeet, is a species of parrot, one of two in the genus Psilopsiagon within the family Psittacidae. It is found in the Puna grassland. Its natural habitat is subtropical or tropical high-altitude shrubland. Four subspecies are recognised.
The white-throated quail-dove is a species of bird in the family Columbidae. It is found in Argentina, Bolivia, Colombia, Ecuador, and Peru.
The tufted tit-tyrant is a species of bird in the tyrant flycatcher family Tyrannidae. This species is found in western South America; its range stretches from southern Colombia south along the Andes mountains to Tierra del Fuego. It prefers to live in upper montane forests and shrublands; however, it is a habitat generalist and can be found across a wide range of ecosystems. The tufted tit-tyrant has three subspecies, including the nominate subspecies Anairetes parulus parulus, A. p. aequatorialis, and A. p. patagonicus, and is very closely related to the Juan Fernández tit-tyrant. It is very small with a distinctive and conspicuous crest. The bird's head is black overall with white supraloral and postocular stripes. Its dull grayish-brown back contrasts with its white throat and breast that are covered with black streaks and pale, unmarked yellow underbelly. There are few noticeable differences in plumage between the subspecies. It is a vocal flycatcher with a broad repertoire of songs.
The red pileated finch, also known as the red-crested finch, is a species of bird in the family Thraupidae. It is found in Argentina, Bolivia, Brazil, Ecuador, French Guiana, Guyana, Paraguay, Peru, on the eastern side of the Andes. Its natural habitats are subtropical or tropical dry forests, subtropical or tropical moist lowland forests, subtropical or tropical dry shrubland, and heavily degraded former forest. This is a common species, and the International Union for Conservation of Nature has rated its conservation status as "least concern".
The lesser elaenia is a species of bird in the family Tyrannidae, the tyrant flycatchers.
The plain-crested elaenia is a species of bird in the family Tyrannidae. It is found in Bolivia, Brazil, Colombia, French Guiana, Guyana, Peru, Suriname, and Venezuela.
The sierran elaenia is a species of bird in the family Tyrannidae.
The grey-crested finch is a species of bird in the tanager family Thraupidae. It is found in Bolivia and northwestern Argentina where its natural habitats are subtropical or tropical high-altitude shrubland and heavily degraded former forest. The bird was first described in 1837 by the French ornithologist Frédéric de Lafresnaye and the French zoologist Alcide d'Orbigny after the latter had collected it on an expedition he undertook for the Paris Museum to South America between 1826 and 1833.
The ornate stipplethroat or ornate antwren is a species of bird in the family Thamnophilidae. It is found in Bolivia, Brazil, Colombia, Ecuador, and Peru. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical swamps.
The mountain wren is a species of bird in the family Troglodytidae. It is found in the Andes of northwestern Argentina, Bolivia, Colombia, Ecuador, Peru, and western Venezuela.
The straight-billed earthcreeper is a species of bird in the family Furnariidae. It is found in Argentina, Bolivia, Chile, and Peru. Its natural habitat is subtropical or tropical high-altitude shrubland.
The crested quetzal /ketSAHL/ is a species of bird in the family Trogonidae native to South America, where it is found in Bolivia, Colombia, Ecuador, Peru, and Venezuela. Its natural habitat is subtropical or tropical moist montane forests.
The grey-breasted seedsnipe is a species of bird in the family Thinocoridae. It is found in Argentina, Bolivia, Chile, and Peru.
The Chilean hawk is a bird of prey species belonging to the typical hawks. It breeds in Andes forests from central Chile and western Argentina south to Tierra del Fuego, from sea level to 2,700 m altitude. Some winter apparently in the lowlands of NW Argentina.
The Chilean elaenia is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found from southern Bolivia to Tierra del Fuego. It is sometimes considered a subspecies of the white-crested elaenia.