Jackdaws (Corvus monedula). Both juveniles of the year, from different nests. Grey mutation, aberrant, bird left, adopting a begging to be fed posture

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Jackdaws (Corvus monedula). Both juveniles of the year, from different nests. Grey mutation, aberrant, bird left, adopting a begging to be fed posture, with darker normal coloured, slightly older bird right, about to plunge pre-ingested food into the bill of the other. Behaviour, not learnt, but the instinctive, a prompted response to begging, being the coloured gaping bill of the other.

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Size: 6720px × 4480px
Photo credit: © Joe Blossom / Alamy / Afripics
License: Licensed
Model Released: No

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