doi:10.1006/anbe.2003.2178 eh

init r 2 t p pri e n ve. rns od at ou paternity. Both parents were more likely to feed nestlings that begged first or were closer to the nest entrance, suggesting that parents allocate food resources in response to cues that nestlings control. As a consequence, brood reduction was facilitated by biased provisioning within the brood in addition to the nestling size hierarchies created by hatching asynchrony. 2003 Published by Elsevier Ltd on behalf of The Association for the Study of Animal Behaviour