Blue-crowned Parakeet
Thectocercus acuticaudatus
Bright green bird with blue crown and face, distinct white eyering and long, pointed tail. Native to lowland dry forest and scrub in South America; introduced to urban areas in south Florida, California, and Honolulu, Hawaii. Often seen in small flocks; can travel large distances between roosts and feeding areas. Listen for high-pitched grating calls.
识别特征
The blue-crowned parakeet is a medium-sized bird measuring approximately 37 cm (14.5 in) in length and weighing between 140 and 190 g (4.9 and 6.7 oz).<p>Blue-crowns are born with red coloring around the head, but blue-crowns are predominantly green, with dull blue coloring on the forehead, crown, cheeks, and ears in the nominate, but less blue in other subspecies. It has a ring of white featherless skin around each eye, though this is bright orange-yellow in wild T. acuticaudata neumanni. The breast feathers may also be tinged with blue, though they are more commonly green to yellow-green. Closed wing coloring matches that of the body while extended wings show blue-brown, becoming chestnut on the outer flight feathers. The tail feathers are green on top, maroon to red-brown on the underside, iridescing to bright orange and scarlet under full-spectrum light. Legs are pink-brown with grey-brown claws. The upper mandible is horn-colored, tapering to a needle-sharp, grey-black tip. In the southern and western nominate and subspecies neumanni, the lower mandible is horn-colored in juveniles, fading to grey-black by the bird's second year. The remaining eastern, central and northern subspecies retain the horn-colored lower mandible throughout adulthood.
分类信息
While T. acuticaudatus is the only species in the monotypic genus Thectocercus, this species has five subspecies:<p>Previously, this species was part of the genus Aratinga, but that genus was split in four distinct genera once various phylogenetic studies showed that the genus, as traditionally defined, was polyphyletic.
- 学名
- Thectocercus acuticaudatus
- 命名信息
- (Vieillot, 1818)
- 目
- Passeriformes
- 科
- Furnariidae
- 属
- Thectocercus
分布与栖息地
- 迁徙
- Nomadic movement
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Bar-crested Antshrike
Thamnophilus multistriatus
A shy bird typically found in thickets and forest edges. Stout bill with hooked tip, like other antshrikes. Male is barred black and white all over, very similar to Barred Antshrike but with barred crown (not solidly dark). Female has rufous cap and upperparts and is entirely barred black and white below. Most often seen in pairs moving furtively through dense vegetation; can be difficult to get a clear view. Restricted to western Colombia. Listen for its accelerating song, similar to Barred Antshrike but with less explosive ending.
Banasura Laughingthrush
Montecincla jerdoni
This is the only montane laughingthrush in its range and hence unmistakable. It is dull brown above, with gray breast and head and a pale rufous belly. It has a black chin connecting to a black eye-line and a prominent white eyebrow. Inhabits stunted montane forests, where it is seen in pairs or noisy flocks, producing a melodious “pee-kooo” song and several other chatters intermingled with musical notes. Heard more often than seen; its songs and calls are usually the first indication of its presence.
Antillean Piculet
Nesoctites micromegas
A tiny, chubby woodpecker that frequents a wide variety of wooded habitats including mangroves. More prone to feed on small branches, even vines, than are larger woodpeckers. Olive-brown above and streaked below, unlike any other species in its range. Male has red on crown that female lacks. Its call is a loud burst of rapid liquid chatter.
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