Tricolored Heron

Egretta tricolor

Slender, medium-sized heron. Slaty-blue overall with a white belly and white underwings. Extremely long bill. In breeding plumage, look for buffy plumes on the lower back and orange tones on the throat and foreneck. Juveniles are stained rusty on the neck and shoulders. Fairly common but with restricted range in the southeastern U.S., mainly along the coast. More widespread in Central America and northern South America. Occurs in shallow wetlands, marshes, and mudflats. Often forages actively, darting around erratically and chasing after fish.

识别特征

This species measures from 56 to 76 cm (22 to 30 in) long and has a typical wingspan of 96 cm (38 in). The slightly larger male heron weighs 415 g (14.6 oz) on average, while the female averages 334 g (11.8 oz). It is a medium-large, long-legged, long-necked heron with a long, pointed, yellowish or greyish bill with a black tip. Its legs and feet are dark. The plumage of the triclolored heron changes dramatically from its juvenile form to its adult form.<p>Adults have a blue-grey head, neck, back, and upper wings, with a white line along the neck. The belly is white. In breeding plumage, they have long, blue, filamentous plumes on their heads and necks, and buff ones on their backs.

分类信息

学名
Egretta tricolor
命名信息
(Müller, PLS, 1776)
Pelecaniformes
Ardeidae
Egretta

分布与栖息地

迁徙
Complete migrants

保护状况

种群趋势
stable

照片

分布

鸟叫声

其他鸟类

Bohemian Waxwing

Bohemian Waxwing

Bombycilla garrulus

Plump, smooth-plumaged bird with a sleek crest and white and yellow markings on wings. Mostly clean gray with brighter rusty wash on the face. Look for rich rufous undertail. Breeds in open coniferous forests at high latitudes across the Northern Hemisphere. Winter range depends on fruit crops; sometimes descends much further south in large numbers. Often found in flocks feasting on fruiting trees like crabapple and mountain ash. Listen for their ringing trills, often given while flying overhead. Compare with Cedar Waxwing in North America and Japanese Waxwing in Asia; Bohemian is larger and grayer, with a different wing pattern and no yellow on the belly.

White-fronted Bee-eater

White-fronted Bee-eater

Merops bullockoides

A bright and colorful bee-eater; the red throat and white line under the black face mask render it unmistakable. Pairs and groups inhabit woodland adjacent to watercourses, hillsides, and scrub, especially near earthen banks, where nesting colonies are formed by up to 450 individuals burrowing into the dirt. They have one of the most complex of all avian societies, featuring families, clans, and pirates! A nasal rolling “ngyaaau” is the main vocalization.

Ochre-breasted Antpitta

Ochre-breasted Antpitta

Grallaricula flavirostris

Small and fairly bright antpitta found in foothills and subtropics from Costa Rica to Bolivia. Typical antpitta shape: plump and short-tailed. Dull brown above. Messy-looking buffy face and eyering. Some geographic variation: breast color varies from buffy to whitish, and some populations show bold dark scaling on breast, while others are nearly unmarked. Sexes similar. Shy and difficult to see; stays on or near the ground in forest, often perching on small limbs a couple meters high (more so than the larger antpittas). Swings its body side to side. Song can be difficult to detect: a simple, extremely high pitched, descending whistle. Occurs from around 500–2,500 m, usually lower than other small antpittas.

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