Olivaceous woodcreeper
| Olivaceous woodcreeper | |
|---|---|
 |
|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Passeriformes |
| Family: | Furnariidae |
| Subfamily: | Dendrocolaptinae |
| Tribe: | Dendrocolaptini |
| Genus: |
Sittasomus Swainson, 1827 |
| Species: | S. griseicapillus |
| Binomial name | |
|
Sittasomus griseicapillus (Vieillot, 1818) |
|
The olivaceous woodcreeper (Sittasomus griseicapillus) is a passerine bird of the tropical Americas. It belongs to the true woodcreepers (tribe Dendrocolaptini) of the ovenbird family (Furnariidae).
It is the only member of the genus Sittasomus, but includes 15 vocally and morphologically distinct subspecies in 5 groups, some of which are candidates for a future split.
This small woodcreeper is a slender bird, typically 13.1–19.3 cm (5.2–7.6 in) long, and weighing 8.6–18 g (0.30–0.63 oz). The head, upper back and underparts are lighter or darker greyish olive, and the wings, tail and lower back are light rufous. The bill is short and thin.
The normal call is a fast, high-pitched trill wu-wu-wu-we-we-we-we-ee-ee-ee-ee-we-we-we-we, but this varies geographically.
It breeds from southern Mexico through tropical Central and South America to northern Argentina and Uruguay, and also on Tobago. The species is found throughout the Amazon basin, but is absent from its lowest reaches, including much of the adjacent Guyanas.
There, the subspecies of the northeastern Amazon (S. g. axillaris) ranges at least to the Pakaraima Mountains, where it is fairly common at 1,200–1,400 m (3,900–4,600 ft) ASL, descending to about 850 m (2,790 ft) ASL on occasion. The olivaceous woodcreeper has also been recorded from extreme southern Guyana and the Essequibo River (which may be its eastern limit in the region). It is apparently completely absent from eastern Guyana eastwards through Suriname and French Guyana.
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Wikipedia