White-tailed Tityra

Tityra leucura

Rare and mysterious species long known only from a 19th century specimen, but more recently seen by a lucky few in southern Amazonian Brazil. Seems to prefer the canopy of tall, humid forest. Mostly white with a slightly grayer back, and black cap and wings. Compared to other tityra species, note white tail, shorter and smaller bill, and lack of any bare facial skin. Taxonomic affinities are uncertain, and shape and behavior seem closer to some becards than other tityras. Voice unknown.

识别特征

The white-tailed tityra (Tityra leucura) is a medium-sized passerine bird about 19 cm long with pied plumage, mostly white or very pale grey, but with a black crown and wings. It is found in a small area of the Amazon rainforest near the Madeira River in the far west of Brazil close to the Peruvian border. It was first discovered in 1829 but the one specimen collected then, an immature male, sat forgotten in the Natural History Museum, Vienna until 1868, when August von Pelzeln concluded it represented an undescribed species. For many decades after that, no further individuals were seen; its close similarity to the widespread black-crowned tityra resulted in its being widely considered an aberrant specimen of that. Very recently however, further live male individuals were seen and later photographed in the same region in 2006 and 2022 respectively; re-evaluation based on these new sightings resulted in the conclusion that Pelzeln was correct in his decision to name it as a distinct species. It differs from black-crowned tityra in having a white, not black, tail.

分类信息

Genus: Tityra; Family: Tityridae; Order: Passeriformes.

学名
Tityra leucura
Passeriformes
Tityridae
Tityra

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其他鸟类

Greater Sand-Plover

Greater Sand-Plover

Anarhynchus leschenaultii

Medium-sized plover with a long hefty bill. Breeding adults have a dark mask and orangish chest, neck, and forehead; females duller than males. Non-breeding birds and immatures are sandy brown above and white below, with a white throat and “eyebrows.” Often confused with Lesser Sand-Plover, and best distinguished when both present; look for larger size, heavier and longer bill, paler legs, and larger-headed appearance. Additionally, unlike some Lesser Sand-Plovers, Greater never has a black boundary around the throat. Breeds in high-elevation areas, where it favors arid, open habitats, sometimes near water. Winters on coastal mudflats and estuaries.

Fernwren

Fernwren

Oreoscopus gutturalis

Small scrubwren-like bird found in wet rainforests at higher elevations in the Atherton Tablelands of far northern Queensland. Adult entirely brown except for white throat, black bib, and faint pale supercilium. Juvenile almost completely dark brown, with a faint hint of pale throat and brow. Forages on the ground in deep leaf litter. Call a series of high-pitched, penetrating notes followed by a longer note.

Black-tailed Gnatcatcher

Black-tailed Gnatcatcher

Polioptila melanura

Tiny gray insectivore of scrubby areas in the southwest U.S. and northern Mexico. Breeding males show a black cap with a thin white eyering; nonbreeding males have a thin black line over the eye. Females lack any black on the head. Note tail pattern from below: mostly black with bold white spots. Prefers dry, scrubby habitats such as desert washes, where pairs flit around in the low bushes. Listen for harsh scolding calls. Compare with Blue-gray Gnatcatcher, but note Black-tailed often looks drabber brownish-gray, and has much more black on the underside of the tail.

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