Band-tailed Guan
Penelope argyrotis
A pale-faced and short-crested guan with a red throat and dark brown body with contrasting fine white streaks. Face markings are distinctive: has a long pale eyebrow and whitish moustache and cheeks; also shows bare bluish gray skin around the eye and a dull rufous tipped tail. Sexes similar. Common in the canopy of cloud forest, generally in groups resting or foraging for fruits. Often very quiet, but easy to see when flying awkwardly from a tree or vocalizing. The alarm call is a soft piping whistle or a loud gruff and harsh burst of calls; also gives a wing-rattle display, common just before sunrise or after sunset. Found only in Colombia and Venezuela.
识别特征
The band-tailed guan is 50 to 61 cm (1.6 to 2.0 ft) long. Males weigh 686 to 981 g (1.5 to 2.2 lb) and females 625 to 900 g (1.4 to 2.0 lb). The nominate subspecies' upperparts are blackish-brown to dark rufous with conspicuous white streaks. Its breast is olive brown and belly is pale to medium brown. Its face is pale grey to white and it has a prominent red dewlap. It gets its name from the wide chestnut band across the end of the tail. P. a. albicauda differs from the nominate by having buffy tips on the tail feathers. P. a. colombiana has more white on the crown and less white on the face than the nominate.
分类信息
The band-tailed guan is closely related to bearded guan (Penelope barbata) and they at times have been considered conspecific. The band-tailed guan has three subspecies, the nominate P. a. argyrotis, P. a. albicauda, and P. a. colombiana. The last of these has sometimes been treated as a separate species, and two other subspecies split from albicauda and colombiana have been proposed, but these treatments have not gained support.
- 学名
- Penelope argyrotis
- 命名信息
- (Bonaparte, 1856)
- 目
- Galliformes
- 科
- Cracidae
- 属
- Penelope
分布与栖息地
The nominate subspecies of band-tailed guan is found in the eastern Andes of Colombia and western Venezuela and also in the Venezuelan Coastal Range. P. a. albicauda is found in the Serranía del Perijá of northern Colombia and northwestern Venezuela. The nominate P. a. argyrotis is restricted to the Sierra Nevada de Santa Marta of northern Colombia. They mostly inhabit dense wet virgin forest, though they will sometimes be found in secondary forest, shade coffee plantations, and the upper reaches of drier forest. In the Sierra Nevada de Santa Marta they range in elevation from 550 to 2,000 m (1,800 to 6,560 ft) and in Venezuela usually from 800 to 2,400 m (2,600 to 7,900 ft), though locally much higher or lower.
- 迁徙
- Resident species
行为
The band-tailed guan usually forages in groups of up to six, but more may feed in a fruit-laden tree. It feeds on fruit, usually in the mid-story, but will eat fallen fruit on the ground.<p>The band-tailed guan's breeding season extends from January to May. It is territorial though several territories may be close to each other. The nest is a loose structure of plant matter placed up to 8 m (26 ft) high in a tree.<p>The band-tailed guan uses a wing-rattling display to announce territories; it sounds like "canvas ripping forward, then in reverse". Alarm calls are "soft, piping whistles" and in extreme alarm "a repeated shrieking 'GUEEA!' interspersed by various gruff notes".
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Pacific Black Duck
Anas superciliosa
Mottled brown dabbling duck with distinctive striped head pattern. Note purple/green metallic panel on wing and slightly domed head. Common throughout range, often found on or beside ponds, wetlands, and rivers. Hybridizes with Mallard. Similar to female Mallard but note Pacific Black Duck’s darker coloration and distinctive striped cream head with gray bill, darker legs and feet. Also look for green speculum with black border in flight.
Fire-tailed Sunbird
Aethopyga ignicauda
Breeding male’s long bright red tail is unmistakable. Female is yellow-green with a grayish head and a rufous tinge to the tail. Immature and non-breeding males are similar to the female, but with a varying amount of bright red on the rump and tail. Breeds in high-altitude forests and scrub up to the treeline, favoring oak and coniferous forest with a rhododendron understory; winters down to around 600 meters, often in forest edge. Gives high thin buzzy calls and twitters.
Pacific Baza
Aviceda subcristata
Conspicuous medium-sized hawk with broad paddle-shaped wings that pinch in close to the body. When perched it is easily distinguished from other species by small black crest on the back of gray head and enormous yellow eyes, prominent brown stripes on white belly. Often found in suburban areas. Crashes into foliage to snatch insect prey. Has distinctive "mee-choo" call.
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