black billed nightingale thrush

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    The black-billed nightingale-thrush (Catharus gracilirostris) is a small thrush endemic to the highlands of Costa Rica and western Panama. Its position in the genus Catharus is somewhat equivocal, but it is apparently closer to the hermit thrush than to the other nightingale-thrushes except the russet nightingale-thrush and/or the ruddy-capped nightingale-thrush (Winker & Pruett, 2006).
    It is found in the undergrowth of wet mountain oak forests and second growth, typically from above 1350 m altitude to patches of scrubbery beyond the timberline. The nest is a bulky lined cup constructed 1–5 m high in a scrub or small tree, and the typical clutch is 2 brown-blotched greenish-blue eggs.
    This small species is 13.5 to 16 cm (5.3 to 6.3 in) in length and weighs 21 g (0.74 oz). The adult has olive- brown upperparts, a grey crown, paler grey underparts, becoming whitish on the belly, and an olive breast band. Its bill is black.
    The juvenile is darker on the head and underparts, has a brown breast band, and the belly is marked with brown. The birds in the Chiriqui mountains of western Panama are slightly more rufous above and paler below than the Costa Rican population, and are sometimes considered as a subspecies, C. g. accentor.
    The black-billed nightingale-thrush will normally forage low in vegetation or on the forest floor, alone on in pairs, progressing in hops and dashes with frequent stops. It turns leaf litter in typical thrush fashion seeking insects and spiders, and also eats many small fruits. Despite its habitat, this species is tame and often confiding.
    The black-billed nightingale-thrush's song is up to three flute-like tones followed by a jumbled trill, and the call is a high thin seet.


    References



    Clement, Peter & Hathaway, Ren (2000): Thrushes. Christopher Helm, London. ISBN 0-7136-3940-7
    Stiles, F. Gary & Skutch, Alexander Frank (1989): A guide to the birds of Costa Rica. Comistock, Ithaca. ISBN 0-8014-9600-4
    Winker, Kevin & Pruett, Christin L. (2006): Seasonal migration, speciation, and morphological convergence in the avian genus Catharus (Turdidae). Auk 123(4): 1052–1068. [Article in English with Spanish abstract] DOI: 10.1642/0004-8038(2006)123[1052:SMSAMC]2.0.CO;2 PDF fulltext

Kata Kunci Pencarian: black billed nightingale thrush

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black billed nightingale thrush

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Black-billed Nightingale-Thrush - eBird

Small skulking thrush, more often heard than seen. Distinctive if seen well: all gray, slightly browner above, with blacker cap. Bill and legs are dark. Dark eye distinguishes from Slaty …

Black-billed Thrush - eBird

A drab thrush, common in open habitats and woodlands in the lowlands but also wanders up into Andean foothills. Nondescript grayish-brown with a pale whitish belly. Note indistinct streaking …

Black-headed Nightingale-Thrush - eBird

Small, plain-breasted thrush of tropical and subtropical evergreen forest in foothills and highlands. Usually elusive and heard far more often than seen. Feeds mainly on the ground, but also in …

Yellow-throated Nightingale-Thrush - eBird

Plumage distinctive: black head, contrasting orange eyering, bill, and legs, and yellow underparts with dusky spotting. Song distinctive: short, slightly squeaky, fluty phrases, repeated. Limited …

Checklist for Savegre Mt. Lodge--primary forest trails above lodge …

Black-billed Nightingale-Thrush. ... Ruddy-capped Nightingale-Thrush. Swainson's Thrush. Catharus sp. Wood Thrush. Mountain Thrush. Clay-colored Thrush. Sooty Thrush. Turdus sp. …

Checklist for Panama - eBird

Black-billed Nightingale-Thrush. Orange-billed Nightingale-Thrush. Slaty-backed Nightingale-Thrush. Ruddy-capped Nightingale-Thrush. Black-headed Nightingale-Thrush. Veery. Gray …

15 Dec 2024 - Paraiso Quetzal Lodge - Km 70 - eBird

Dec 15, 2024 · Submitted by JAMES RANDOLPH.

Bar Charts - eBird

Black-billed Nightingale-Thrush Slaty-backed Nightingale-Thrush Ruddy-capped Nightingale-Thrush Swainson's Thrush Wood Thrush Mountain Thrush Clay-colored Thrush Sooty Thrush …

Checklist for Mount Totumas Cloud Forest Reserve - eBird

Black-billed Nightingale-Thrush. Orange-billed Nightingale-Thrush. Slaty-backed Nightingale-Thrush. Ruddy-capped Nightingale-Thrush. Gray-cheeked Thrush. Swainson's Thrush. …

eBird Checklist - 19 Jan 2025 - Cerro Vueltas Lodge - 9 species

Jan 19, 2025 · Provisional: Either: 1) member of exotic population that is breeding in the wild, self-propagating, and has persisted for multiple years, but not yet Naturalized; 2) rarity of uncertain …