Males in summer have all white heads and underparts contrasting with a black mantle and wing tips. Females are a more mottled above. In autumn and winter birds ... |
26 янв. 2022 г. · However, males in winter have very dark spade-shaped or round-tipped centres to the scapulars, the lesser and median coverts are white and there ... |
Males show a broad blunt tip to the black centre of the scapulars, while in females these feathers show a pointed dark brown centre. The difference is least ... |
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