Velvet-fronted Grackle
Lampropsar tanagrinus
Slim, medium-sized blackbird closely associated with water. Plumage is entirely black with iridescent sheen; note dark eyes. At close range, note rather short bill and diagnostic patch of short, dense feathers on forehead. Farther away, note habitat, social habits, and vocalizations. Found in flooded habitats including coastal swamps and riverine forest. Flocks rove through forest, often descending to ground at the water's edge, probing a variety of substrates in search of food while vocalizing constantly. Song is regionally variable and consists of grating, creaking, and sharp whistled notes; low chucking calls are similar to those of many other blackbirds. Distinctive if seen well; distinguished from other grackles by dark eyes, and from male Shiny Cowbird by habitat (usually) and longer bill and tail.
识别特征
The male velvet-fronted grackle grows to about 22 cm (9 in) and the female about 19 cm (7.5 in). Both sexes are entirely black, with a slight bluish gloss on the dorsal surfaces. The feathers at the front of the crown are very short and dense, giving a velvet-like appearance at close quarters. The beak is short, conical and pointed, the iris is dark and the tail is long and somewhat rounded. The calls produced include a crackling "chack" and a whistling "cheziit", and the song, sometimes sung at dusk from a perch, is a moderately-musical rapid gurgling sound. This species could be confused with the shiny cowbird (Molothrus bonariensis), but their calls and habits are quite different.
分类信息
- 学名
- Lampropsar tanagrinus
- 命名信息
- (Spix, 1824)
- 目
- Passeriformes
- 科
- Icteridae
- 属
- Lampropsar
分布与栖息地
The velvet-fronted grackle has two separate populations; one is in Venezuela and Guyana; the other is in southern Colombia, eastern Ecuador, northern Peru, western Brazil and northern and central Bolivia. Its typical habitat is várzea forests which periodically become flooded, forest borders and swamps near ponds; rivers and lakes.
- 迁徙
- Resident species
行为
This species often congregates with others of its kind in small groups of up to about twenty birds. Sometimes these coalesce with groups of tanagers and caciques. The birds move noisily through the canopy, foraging high and low, and sometimes hopping around on floating vegetation on lakes. The diet includes insects such as winged ants and beetles but is poorly described. In Guyana it breeds in March, in Ecuador in September and in Bolivia in October and February.
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类

Spot-breasted Thornbird
Phacellodomus maculipectus
Shy understory bird of upper humid montane forest in the east slope of the Andes from central-western Argentina to central Bolivia. Prefers thick understory, and more often heard than seen. Often curious and inquisitive, but tends to stay hidden when possible. From similar Streak-fronted Thornbird by reddish cap, spotted underparts, and habitat (Streak-fronted prefers dryer and more open woodland). Song an accelerating then decelerating series of 10-12 “queet!” notes that rise and then fall in pitch.

Taveta Golden-Weaver
Ploceus castaneiceps
Breeding male is rich yellow with darker orange patches on the breast and the rear part of the crown. The female is dark on the back and buffy yellowish below with a pale base to the bill. Both sexes show a dark eye. Breeds in and around reedbeds, but ranges into surrounding savanna and woodland. Very similar to Golden Palm Weaver, but there is no overlap in range. Also similar to Holub’s and African Golden-Weavers, but usually separated by the black eyes. Females can be confusing, but almost always associate with the more distinctive males. The calls include a dry rattling that is combined with typical weaver “radio static” in the song.

American Three-toed Woodpecker
Picoides dorsalis
Inconspicuous and uncommon woodpecker of coniferous forests, particularly spruces, often at high elevations (especially in the Rockies). Prefers recently burned areas or bogs with many dead trees. Distinctive habit of flaking bark off trees in search of grubs; behavior shared only by Black-backed Woodpecker. Generally dark with barred flanks and subtle white spots on wings and back. Face is black with white stripes above and below the eye and white speckles on the forehead. Eastern birds darker than western birds. Males show yellow patch on crown; sexes otherwise alike. Most similar to Black-backed Woodpecker but American Three-toed always shows some white on back and more white on head. Listen for soft, hollow "pweek" call and slow drumming that fades at the end.
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