Scaly-sided Merganser

Mergus squamatus

Sleek, secretive diving duck with a bright orange-red bill and a long, shaggy crest. Relatively rare East Asian endemic. Male has a glossy green head and a black-and-white back. Female has a rusty brown head and gray back. Both sexes have prominent dark-edged white “scales” on the sides that distinguish them from other merganser species. Breeds in cavities along forested montane rivers and winters on fast-flowing rivers and lakes.

识别特征

This striking sea duck has a thin red bill and a scaled dark pattern on the flanks and rump. Both sexes have a crest of wispy elongated feathers, reaching almost to the shoulders in adult males and being fairly short in females and immatures. The adult male has a black head and neck, white breast and underparts, and blackish mantle and wings, except for the white innerwings. The scaling is also black, while the tail is medium grey. The female has a buffish head and otherwise replaces the male's black with grey colour. The legs are orange-red and the irides dark brown in both sexes.

分类信息

Genus: Mergus; Family: Anatidae; Order: Anseriformes.

学名
Mergus squamatus
命名信息
Gould, 1864
Anseriformes
Anatidae
Mergus

分布与栖息地

迁徙
Complete migrants

行为

Migration pattern: Complete migrants.

保护状况

Population trend: declining.

种群趋势
declining

照片

分布

其他鸟类

Yellow-bellied Sapsucker

Yellow-bellied Sapsucker

Sphyrapicus varius

Striking and unmistakable in most of range; the only sapsucker in eastern North America. Long, solid white wing patch helps distinguish it from Downy and Hairy Woodpeckers. Adult male has red cap and throat; females are similar but with white throat; juveniles are messy brownish-gray overall. The namesake yellow belly can be difficult to see and is sometimes almost absent. Often looks disheveled, especially in fall and winter. Compare with the extremely similar Red-naped Sapsucker, which barely overlaps in range. Note male Yellow-bellied has complete black border around red throat patch, and the white markings on the back are more extensive and messy. Occurs in almost any wooded habitat, breeding in the boreal forest across Canada and wintering as far south as Costa Rica. Like other sapsuckers, drills rows of sap wells into tree bark. Listen for irregular drumming (like morse code) and various nasal calls.

Social Flycatcher

Social Flycatcher

Myiozetetes similis

Looks like a mini version of Boat-billed Flycatcher; in particular note Social’s small bill. Common in tropical and subtropical areas, especially in semi-open areas with trees and hedges, woodland edge, towns, gardens. Often noisy and ‘social’ (some of its calls suggest parakeets); usually found in pairs or small groups, often perching conspicuously. Eats a lot of berries, and often occurs alongside Boat-billed Flycatcher and Great Kiskadee in fruiting figs and other trees.

Sikkim Treecreeper

Sikkim Treecreeper

Certhia discolor

Dark treecreeper with a warm rusty tail, thin white brow and mustache, and a gray chest. Warm tones on the tail contrast sharply with the cooler brown on the back and wings. Inhabits broadleaf and mixed forests, where it usually forages at the middle and upper levels. Unlike other treecreepers in the region, gives a long rapid-fire rattling trill instead of a series of high whistles and twitters.

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