未成鳥 © Antonio Robles
未成鳥 © Phil Chaon
成鳥 © Sandy Gallito
成鳥 © Andrew Spencer

Transvolcanic Jay Aphelocoma ultramarina

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辨識

MERLIN 技術支援

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.

MERLIN 技術支援