COLIN VARNDELL / SCIENCE PHOTO LIBRARY COLIN VARNDELL / SCIENCE PHOTO LIBRARY
Female Eurasian siskin (Carduelis spinus) on a branch. The siskin is a type of finch. It breeds in northern Europe, parts of Russia and eastern Asia, and migrates south in the winter. It favours coniferous woodland. Photographed in Dorset, UK, in March.
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