Blue-gray Noddy
Anous ceruleus
A very small, pale gray tern with large dark eyes. Smaller and paler gray than Brown and Black Noddies with slightly more of a forked tail. Nests on rocky sea cliffs on tropical islands, typically foraging close to shore, fluttering close to the water and plucking food from the surface in small flocks. Voice is a distinctive nasal “kearr.”
识别特征
The blue noddy is 25–28 cm (9.8–11.0 in) in length and has a wingspan of 46–60 cm (18–24 in).
分类信息
The first formal description of the blue noddy was by Frederick Debell Bennett in 1840 under the binomial name Sterna cerulea. The specific name ceruleus is Latin for "dark blue".<p>The blue noddy was formerly placed in the genus Procelsterna. A molecular phylogenetic study published in 2016 found that the five noddies formed a single clade with the blue noddy and the grey noddy in Procelsterna nested between the species in the genus Anous. The authors proposed that the noddies should be merged into a single genus Anous and that Procelsterna should be considered as a junior synonym.<p>A seabird observed at Necker Island, the French Frigate Shoals, and Nihoa during a cruise through the Northwestern Hawaiian Islands by the United States Fish Commission research ship USFC Albatross in 1902 originally was thought to be new to science and was given the scientific name Procelsterna saxatalis and the popular name Necker Island tern. It later was reclassified as a subspecies of the blue noddy.There are five subspecies:<p>The grey noddy (Anous albivitta) replaces it to the south of its range; the two were formerly considered to be a single species but are now often split.
- 学名
- Anous ceruleus
- 命名信息
- (Bennett, FD, 1840)
- 目
- Charadriiformes
- 科
- Laridae
- 属
- Anous
分布与栖息地
- 迁徙
- Resident species
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类

Gray Wren-Warbler
Calamonastes simplex
A very dark, long-tailed warbler of dry country. Blackish-gray overall with a reddish eye and white tips to the tail. With a good look, barring on the throat, belly, and vent may be visible. The tail is frequently cocked up. Generally common in dry thorn savanna and thornscrub. Usually stays in the understory, but will sing from the tops of bushes and small trees. Similar in shape to Miombo Wren-Warbler, but much darker, with virtually no overlap in range. The main vocalization is a loud “chup,” repeated about once per second.

Black-chinned Mountain Tanager
Anisognathus notabilis
Large and colorful tanager of Andean cloud forest in western Ecuador and western Colombia. Plumage is golden-yellow with a black head, blue wing patch, and yellow stripe on rear crown. Separated from the more common Blue-winged Mountain-tanager by yellow back, orange tinge to underparts, black chin, smaller crown stripe, and less blue in wing. Usually encountered in pairs or small groups that move through middle levels of the forest, often with mixed-species flocks. Visits feeders in some areas.

Orange-headed Tanager
Thlypopsis sordida
Restless tanager with a thin bill and a bright yellow-orange head. Usually forages about eye level or higher in savannas, woodlands, and forest borders. The eastern subspecies has an olive-brown back and cinnamon underparts whereas western birds are gray above and white below. Females are similar but duller. The song is a series of very high-pitched “chip” notes.
开始您的观鸟之旅
在户外识别鸟类,并在下一次观察时随手查阅鸟类图鉴。