Transvolcanic Jay

Aphelocoma ultramarina

Rather large, blue-and-gray jay of highland pine and pine-oak forest endemic to highlands of central Mexico; occurs in transvolcanic belt from Volcánes de Colima in the west to Volcán Orizaba in the east. Typically travels in wide-ranging flocks of 5–25 birds, mainly at middle to upper levels in trees. Appreciably larger and broader-winged than Woodhouse's Scrub-Jays, with plainer plumage (lacks dark mask, whitish eyebrow, and partial dark collar of Woodhouse's Scrub-Jay). Noisy calls carry well.

识别特征

It is a medium-large (~120 g) passerine bird similar in size to most other jays, with a blue head, blue-gray mantle, blue wings and tail, gray breast and underparts. The sexes are morphologically similar, and juveniles differ only in having less blue coloration. The iris is brown and legs are black. It is most readily distinguished by the plain (unstreaked) throat and breast, and the mantle contrasting less with the head and wings.

分类信息

A 2011 decision by the American Ornithologists' Union Check-list Committee treats some populations of the Mexican jay as a separate species, called the Transvolcanic jay (A. ultramarina), based on diagnosable phenotypic differences in plumage and morphology, millions of years of genetic divergence, and no evidence for interbreeding with Mexican Jays. The Transvolcanic jay inhabits montane forest in the Transvolcanic Belt of central Mexico. Populations to the north retained the common name Mexican jay, but their Latin name changed to A. wollweberi because the Transvolcanic jay is the original A. ultramarina.

学名
Aphelocoma ultramarina
命名信息
(Bonaparte, 1825)
Passeriformes
Corvidae
Aphelocoma

分布与栖息地

迁徙
Resident species

保护状况

种群趋势
declining

照片

分布

鸟叫声

其他鸟类

Rufous-crowned Prinia

Rufous-crowned Prinia

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Very long-tailed prinia of hilly and montane areas, descending to foothills in winter. Note rufous crown, warm brown upperparts and sides, and gray cheeks and pale belly. Breeding adult’s white moustache stripe, black throat and chest are unmistakable. Non-breeding has prominent white brow, pale throat, and finely streaked chest. Favors scrubby, open areas. Non-breeding plumage somewhat similar to Striated Prinia, but Rufous-crowned has unstreaked upperparts and white eyebrow. Song is a repetitive series of “plik” notes. Call is a mournful, descending “piuu”.

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Belted Flycatcher

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