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

---

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

---

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

Keywords: aberrant, action, adopted, begging, behavior, behaviour, bill, black, corvus, days, feed, feeding, fledged, fledgling, format, gray, grey, horizontal, incites, initiate, instinct, instinctive, jackdaw, jackdaws, july, juvenile, juveniles, landscape, monedula, mutation, nests, normal, nutrition, pose, position, posture, purpose, reaction, regurgitate, response, stance, standing, western, year, younger