Bare-throated Tiger-Heron

Tigrisoma mexicanum

A large but rather short-legged, primal-looking heron of mangroves and freshwater marshes in tropical lowlands. Often in areas with trees, but also around ponds in rather open marshes. All plumages have naked yellow throat skin (not always easy to see), greenish legs. Adult has gray cheeks, finely barred plumage, and rusty thighs; immature is boldy barred blackish and warm brown (hence the name ‘tiger-heron’).

识别特征

The throat is bare and is greenish-yellow to orange in all plumages. The adult has black crown and light grey sides of the head, the sides of the neck and the upperparts otherwise blackish narrowly barred buff. The median stripe down the fore-neck is white-bordered with black; the remaining underparts are dull cinnamon brown. The juvenile is buff coarsely barred with black, more mottled and vermiculated on wings; the throat, median underparts, and belly are whitish.<p>The flight is heavy, and the call is a hoarse howk-howk-howk. Males also give a booming hrrrowwr! call, especially at sunset. During emission of the call, the beak opens wide and undulations can be seen along the course of the throat from mid-thorax caudally.

分类信息

学名
Tigrisoma mexicanum
命名信息
Swainson, 1834
Pelecaniformes
Ardeidae
Tigrisoma

分布与栖息地

迁徙
Resident species

保护状况

种群趋势
declining

照片

分布

鸟叫声

其他鸟类

Emperor Goose

Emperor Goose

Anser canagicus

Stocky goose that inhabits rocky coastlines, lagoons, and tidal flats. Striking white head, black throat, and petite pink bill. Blue-gray body with intricate black-and white bars, a white tail, and bright orange legs. Face sometimes stained orangish-brown. Juvenile has a gray head, but still shows white tail. Breeds on marshy tundra and winters in small flocks on coastal waters. Rarely seen outside Alaska.

Hodgson's Redstart

Hodgson's Redstart

Phoenicurus hodgsoni

Male very similar in appearance to Daurian Redstart; note more restricted silver on the forehead and less distinct wing panel. Female’s lack of a white wing patch distinguishes her from female Daurian, and she averages paler than female Black Redstart, with a brighter eye-ring. Blue-fronted Redstart female can be similar; Hodgson’s female is colder-toned with a single dark stripe down the tail instead of Blue-fronted’s inverted “T.” Hodgson’s breeds in hilly and montane open forests and forest edge; descends in the winter, favoring scrubby edge.

Fork-tailed Drongo-Cuckoo

Fork-tailed Drongo-Cuckoo

Surniculus dicruroides

Glossy small black cuckoo with a forked tail. Juvenile has a galaxy-like smattering of white spots all over the body. Square-tailed Drongo-Cuckoo has a less prominently-forked tail; note less difference in length of outermost tail feathers. Adults may be confused with drongos, but are lighter-billed and smaller, with distinctly white-barred undertail. Widespread, found in forests and scrubby plains from lowlands up into foothills and mountainous areas, but much more often heard than seen, typically sitting still in the middle and upper levels of forest; song is an extremely loud ascending series of whistles. Lays its eggs in the nests of babblers, bulbuls, and shrikes.

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