juvenile goldfinch male - Axtarish в Google
Small finch with a short, conical bill and a short, notched tail. Breeding males are bright yellow with black forehead, black wings with white markings.
12 авг. 2018 г. · The whites of the adult male are instead a buffy color in the juvenile and his jet-blacks are brownish-black in the youngster. And the bright ...
Nonbreeding adult males are similar to breeding males but browner above, less extensively yellow below. Juveniles are mostly brownish, similar to female but ...
1 мая 2012 г. · In the spring, as they grow new body feathers the males especially transform into bright yellow breeding plumage, but the wing and tail feathers ...
Adult males in spring and summer are bright yellow with black forehead and wings. Females are dull yellow below and olive above with two distinct wingbars. In ...
At first male brings food, female gives it to young; then both parents feed; role of female gradually declines, so that male may provide most food in later ...
Chestnut upperparts; light rump; black and white tail feathers; black wings with a broad yellow bar; red, black and white head. Juvenile with grey-brown head.
22 янв. 2014 г. · Goldfinches can be difficult to age at times and are even more difficult to sex. In this post I only look at ageing and it is mainly based on birds caught for ...
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