Blue Tit (Cyanistes caeruleus) fluffed up during cold spell to increase its insulation capacities, West Sussex, UK. March

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Photo credit: © Lee Dalton / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: animal, animals, autumn, bird, birds, blue, britain, british, caeruleus, cold, cyanistes, europe, european, fluffing, garden, puffed, tit, tits, wildlife, winter