Ornithologist ringing a bird Eurasian blue tit . Biological station for inging of birds and studying its migration.

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Hands of ornithologist scientist measuring length of bird's wing with ruler. Eurasian blue tit. Biological station for banding of birds and studying its migration. Cyanistes caeruleus, Paridae

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Size: 3000px × 2000px
Photo credit: © Irina Kononova / Alamy / Afripics
License: Royalty Free
Model Released: No

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