Great Warbler
| Great Warbler | ||||||||||||
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American Warbler ( Basileuterus lachrymosus ) |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Basileuterus lachrymosus | ||||||||||||
| ( Bonaparte , 1850) |
The wood warbler ( Basileuterus lachrymosus , Syn .: Euthlypis lachrymosa ) is a small songbird from the wood warbler family (Parulidae). The species is sometimes listed as the only representative of the monotypic genus Euthlypis . The distribution area extends from northern Mexico via Guatemala , El Salvador , Honduras to the north of Nicaragua . American warbler are mostly resident birds , some individuals migrate outside of the breeding season to northern Baja California and Arizona . The IUCN lists the species as "not endangered" (least concern).
features
Wood warbler reach a body length of 15 centimeters and a weight of 14.2 to 16.5 grams. The wing length is 6.9 to 8 centimeters in the male, 6.7 to 7.6 centimeters in the female. Adults have a black crown, forehead, and reins . There is a blurry white spot on the reins in front of the eye. The blackish crown is crossed with a yellow elongated crown spot and the interrupted dark circles are white. The ear covers, the sides of the neck, the nape and the upper side plumage with an olive-toned coat and the wings with narrow pale gray feather edges are dark gray. The throat feathers and the belly area are yellow, the chest and the flanks are yellow-brown-yellow. The white broad tail tips of the otherwise dark gray tail are striking. The under tail-coverts are white, the long and rather strong bill blackish and the legs flesh-colored.
Occurrence, nutrition and reproduction
Fan wood warriors inhabit low lying mountain forests and mountain slopes, gorges, mountain foothills and forest-covered areas in the vicinity of lava flows with a lot of undergrowth at heights of 100 to 1200 meters. They seek their food consisting of insects in the lower areas of the vegetation, in the dense undergrowth or on the ground. The tail is always spread and you can clearly see the white tail tips.
The breeding season takes place between March and June. There are no studies on nest building or the breeding and nestling times.
Systematics
Robert Ridgway already assumed a close relationship to the species of the genus Basileuterus ; however, the exact relationship was not clarified for a long time and the species was placed in its own genus Euthlypis . Recent molecular genetic studies confirm that it belongs to the genus Basileuterus .
Three subspecies are described, which, however, represent a cline and flow into one another:
- Basileuterus l. lachrymosus ( Bonaparte , 1850) - Occurs in the central distribution area.
- Basileuterus l. tephrus Ridgway, 1902 - The subspecies is a typical representative in the northern areas. The olive-washed gray upper side plumage is paler.
- Basileuterus l. schistaceus Dickey & Van Rossem , 1926 - This subspecies is typical of the southern distribution areas. The upper side plumage is pure and darker slate gray.
swell
literature
- Jon Curson, David Quinn, David Beadle: New World Warblers. Helm, London 1994, ISBN 0-7136-3932-6 , pp. 64 and 205.
Web links
- Basileuterus lachrymosus in the endangered Red List species the IUCN 2010. Posted by: BirdLife International, 2009. Retrieved on 24 May 2011th
- Wood Warbler at BirdLife International (online, accessed November 4, 2018)
Individual evidence
- ↑ Irby J. Lovette, Jorge L. Pérez-Emán, John P. Sullivan, Richard C. Banks, Isabella Fiorentino, Sergio Córdoba-Córdoba, María Echeverry-Galvis, F. Keith Barker, Kevin J. Burns, John Klicka, Scott M. Lanyon, Eldredge Bermingham: A comprehensive multilocus phylogeny for the wood-warblers and a revised classification of the Parulidae (Aves) , Molecular Phylogenetics and Evolution 57 (2010), doi : 10.1016 / j.ympev.2010.07.018 , p. 753-770