Golden-tufted Grackle

Macroagelaius imthurni

A medium-sized blackbird of tepui highland forests. Adults are entirely black except for yellow tufts at bend of wing; young birds are dull blackish-gray and lack the tufts. Noisy groups range through montane forest canopy and along savanna edges, probing flowers, leaf bases, and bark crevices; may pause to loaf, preen, and call for extended periods. Makes a variety of squeaking and chuckling calls, many with a strongly metallic quality, unlike any other bird in tepui highlands. Epaulet Oriole is also black and yellow, but note grackle’s yellow pectoral tufts (not shoulders), stockier build, thicker bill, and tendency to occur in single-species flocks.

分类信息

学名
Macroagelaius imthurni
命名信息
(Sclater, PL, 1881)
Passeriformes
Icteridae
Macroagelaius

分布与栖息地

迁徙
Resident species

保护状况

种群趋势
stable

照片

分布

鸟叫声

其他鸟类

Pearl-breasted Swallow

Pearl-breasted Swallow

Hirundo dimidiata

A martin-like swallow with a bicolored plumage pattern of steel-blue upperparts and pale underparts. Pairs or small groups flit low over grassland, scrub, farmland, and open woodland, often near water. It is a migrant to the southern parts of South Africa, but it is resident elsewhere, with some poorly understood movements. The Pearl-breasted Swallow differs from House Martin and Gray-rumped Swallow by having a dark (not pale) rump and pale (not dark) underwings.

Tristram's Storm-Petrel

Tristram's Storm-Petrel

Hydrobates tristrami

Dark brown, fork-tailed seabird of the northwestern and central Pacific, where it breeds on Japanese and Hawaiian islands. Generally forages far offshore and does not associate with boats. Dark chocolate-brown overall with prominent pale carpal bars. In optimal light, rump is slightly paler than the plumage of the back and tail, unlike in Markham’s and Leach’s Storm-Petrels; in fresh plumage, note gray sheen to head and back. Lacks the distinctively pale primary shafts of Matsudaira's and Swinhoe’s Storm-Petrels.

Boat-billed Tody-Tyrant

Boat-billed Tody-Tyrant

Hemitriccus josephinae

Tiny, inconspicuous flycatcher with an oversized bill. Plumage generally olive above and yellow below, with faint breast mottling; most readily identified by its large, long bill with entirely pale mandible. A rare resident of tall rainforest, where it seems to prefer areas with many dense vine tangles. Usually encountered alone, sitting deep inside a vine tangle in the mid-story and making short sallies to foliage for insects. Almost always first detected by voice: a series of two or three short hollow notes, somewhat musical and descending in pitch. Unlikely to be confused if seen well, on account of its large bill. Voice is somewhat similar to that of Pelzeln’s Tody-Tyrant but is deeper and seldom exceeds three notes; the two species occupy entirely different habitats.

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