Yellow-billed Nunbird
Monasa flavirostris
Distinctive nunbird with a yellow bill and white shoulder patch. Occupies terra firme forest and forest edge, foraging in the canopy in viny areas and around tree fall gaps. In areas with bamboo, often found in dense bamboo thickets and emergent trees above bamboo. Usually forages in small groups, which give variable warbling songs, usually choppier than those of other nunbirds.
识别特征
The yellow-billed nunbird is 23 to 25 cm (9.1 to 9.8 in) long and weighs about 39 g (1.4 oz). The adult is mostly sooty black, with the belly tending to very dark gray and the tail being greenish black. The lesser wing coverts are mostly white and show as white spots on the closed wing. The bill is yellow and noticeably shorter than those of the other members of its genus. Its eye is dark and the feet blackish. Immatures are a slightly duller black than adults and the white areas are not as prominent.
分类信息
The yellow-billed nunbird is monotypic.
- 学名
- Monasa flavirostris
- 命名信息
- Strickland, 1850
- 目
- Piciformes
- 科
- Bucconidae
- 属
- Monasa
分布与栖息地
The yellow-billed nunbird is found in two areas of the upper Amazon Basin. One extends from southeastern Colombia through eastern Ecuador into northern Peru. The other includes eastern Peru, northern Bolivia, and western Brazil as far east as the upper Purus River. The species inhabits somewhat open landscapes such as transitional forest, secondary forest, the edges of terra firme forest, and regenerating clearings with scattered trees. It occurs from the understory to the subcanopy. In Colombia it is typically found in the Andean foothills at up to 1,400 m (4,600 ft) of elevation. In Ecuador is extends locally as high as 750 m (2,500 ft) but is usually below 400 m (1,300 ft).
- 迁徙
- Resident species
行为
The yellow-billed nunbird's feeding behavior and diet have not been extensively studied. It appears to hunt by sallies from a high exposed perch, catching its prey in the air. Its diet is assumed to be mostly insects like those of other nunbirds.<p>Nothing has been documented of the yellow-billed nunbird's breeding phenology.<p>The yellow-billed nunbird's song "consists of full melodious lengthy phrases in choruses, typically including a frequently repeated 'wheekit-wheeyk, wheekit-wheeyk...'."
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Ijima's Leaf Warbler
Phylloscopus ijimae
An uncommon migrant songbird through Taiwan, rarely encountered anywhere away from breeding grounds on Izu and Tokara Islands, Japan. Olive above and whitish below; best distinguished from similar species by narrow bill with yellowish lower mandible, brownish-pink legs, and weak head pattern. Prefers mature coastal broadleaf forests but uses bamboo patches and conifers during migration as well. Smaller than Eastern Crowned Leaf Warbler, with thinner bill and no crown stripe. Song consists of a series of trills; calls, given often, include a descending “twee” or quiet “pee.”
Rufous Woodpecker
Micropternus brachyurus
Odd medium-sized brownish woodpecker with a short dark bill. Overall coloration and wing markings vary considerably across a wide range. Males have a red patch under the eye. Gives a range of loud, insistent calls, including a sharp “weep weep weep!” Distinctive drum accelerates then trails off. Forages throughout the levels of the forest, often with mixed-species flocks. Frequently drills into ant nests.
Lesser Wagtail-Tyrant
Stigmatura napensis
Small, slender, and long-tailed bird found only on islands along major rivers in the Amazon basin. Distinctive in its specialized habitat with yellow underparts and eyebrow, and conspicuous white patches in its wings and tail. Typically found in pairs, which are often hard to see as they skulk in dense, grassy thickets. Vocalizations include rich, inflected whistles and energetic, rattled churrs, often given as a duet. Birds from northeastern Brazil are now considered a different species, Bahia Wagtail-Tyrant.
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