Black-eared wood warbler
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Black-eared Warbler ( Myioborus ornatus ) |
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| ( Boissonneau , 1840) |
The black-eared wood warbler ( Myioborus ornatus ) is a small songbird from the genus Myioborus in the wood warbler family (Parulidae). The main distribution area is in the Andes of Colombia as well as in the extreme northwestern Venezuela . The IUCN lists them as “not at risk” (least concern).
features
Black-eared warbler reach a body length of 13 to 13.5 centimeters. The wing length is 6.9 to 7.5 centimeters in the male and 6.5 to 7.1 centimeters in the female. Adult black-eared warbler of the nominate form and young birds from the first year on have a light yellow crown plumage. The reins , the eye area and the front ear covers are white. The posterior ear-covers are black with white narrow, crescent-shaped edges. The sides of the neck and the nape of the neck are black; the upper side plumage is dark gray with an olive tinted coat. The wings with gray feather edges and the tail feathers with white outer feathers are blackish. The underside plumage is light yellow to golden yellow, the under tail-coverts white. Legs and beak are blackish. Males and females are alike.
The subspecies Myioborus or chrysops is distinguished by the yellow reins, the yellow eye area and the yellow front ear covers. The crown plumage is slightly lighter than in the nominate form and tinged orange. The black neck plumage extends to the rear crown plumage. The underside plumage is golden yellow with an orange tint.
Occurrence, nutrition and reproduction
Black-eared warblers are predominantly resident birds and only migrate to a limited extent in the high altitudes of the locations they inhabit. They live in pairs or in small groups in mountain forests and cloud forests at altitudes of 2000 to 3400 meters, but are usually found above 2400 meters. Their diet consists mainly of insects and other invertebrates . They either catch them like the flycatchers from a seat guard or rummage for them on the outermost branches of the trees. Among other things, they use plant fibers as nesting material for the bowl-shaped nest. Little is known about the breeding season. In July a male was sighted in Colombia and newly fledged young birds in March in Huila , in May and July in Cauca and in April and November in Cundinamarca .
Subspecies and distribution
This species forms a superspecies with the bird species Glassed Warbler ( Myioborus melanocephalus ) , which probably also includes the White-fronted Wood Warbler ( Myioborus albifrons ) and the Salvin Wood Warbler ( Myioborus flavivertex ).
There are two recognized subspecies:
- Myioborus o. Ornatus (Boissonneau, 1840) - Found in the eastern Andes of Colombia and in the adjacent northwestern Venezuela (Páramo de Tamá; southwestern Táchira ) and south in Colombia to the Bogotá district in central Colombia.
- Myioborus o. Chrysops ( Salvin , 1878) - Found in the southern part of the eastern Andes in Colombia and in the central and western Andes of Colombia. Further distribution areas are in southern Colombia.
etymology
Auguste Boissonneau first described this black-eared wood warbler under Setophaga ornata . The word "Myioborus" is made up of the Greek word "muia" for "fly" and "Parus" for "titmouse". The specific epithet "ornata" comes from Latin and means "decorated". The name "chrysops" in the subspecies stands for the Greek word "khusops", which means something like "gold-colored, gold shimmering".
swell
literature
- Jon Curson, David Quinn, David Beadle: New World Warblers. Helm, London 1994, ISBN 0-7136-3932-6 , pp. 74 and 202-203.
- James A. Jobling, A Dictionary of Scientific Bird Names , Oxford University Press, 1992, ISBN 978-0-19-854634-4
Web links
- Myioborus ornatus in the endangered Red List species the IUCN 2009. Posted by: BirdLife International, 2009. Retrieved on December 20 of 2009.
- Black-eared Wood Warbler at ITIS
- Golden-fronted Redstart (Myioborus ornatus) at Internet Bird Collection with videos and pictures
- Black-eared warbler (Myioborus ornatus) at Avibase with picture
Individual evidence
- ^ Revue zoologique par la Société cuviérienne 1840 p. 70 f Oiseaux nouveaux de Santa-Fé de Bogota Setophaga ornata (French)