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2018-06-14
Samarkand region, Tahta-Karacha pass |
© Maksim Mitropolskiy
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Male Blue Rock Thrush in breeding plumage is blue with grayish-blue underparts; underparts are slightly lighter than upperparts. Wings and tail are black, legs are dark-brownish, bill and claws are black. Spring female is dark-brown slightly bluish tinged above. Underparts are pale-brownish or dark-grey heavy mottled, because feathers have pale tips and dark-brownish pre-terminal strips. Undertail is rusty-buff black barred. Wings and tail are dark-brownish. Bill is black, legs are dark-brownish. After autumn moulting male is dark-brownish whitish mottled above; feathers of underparts are with whitish tips and dark-brownish pre-terminal strips. Autumn female is less distinguished from spring one. Juveniles are similar on female but dimmer; upperparts are with buffy tone; underparts are grayish-buff dark-brownish mottled. Bill and legs are horn color. Sizes: wing 111.3-121.0, tail 75-84. Weight - 37.3-54.5 gr.
"Птицы Казахстана" том 3. "Наука". Алма-Ата, 1970.
