Fledgling begging and parental responsiveness in American dippers (Cinclus mexicanus)
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چکیده
منابع مشابه
Fledgling begging and parental responsiveness in American dippers (<i>Cinclus mexicanus</i>)
In nestling birds, begging typically signals short-term hunger and is often used by parents to allocate food within a brood. Although young birds continue to beg long after nest departure less is known about the information content of begging and its influence on parental allocation patterns post-fledging. We examined the function of begging in fledgling American dippers (Cinclus mexicanus) and...
متن کاملBreeding territory fidelity in a partial migrant, the American dipper Cinclus mexicanus
American dipper Cinclus mexicanus populations are frequently composed of resident individuals that occupy permanent territories year round and migratory individuals that overwinter with residents but migrate to breeding territories on higher elevation creeks each spring. Between 1999 and 2004 we examined how migratory strategy (resident/migratory) and sex differences influence breeding territor...
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Despite extensive theoretical and empirical research into offspring food solicitation behaviour as a model for parent-offspring conflict and communication, the adaptive value of parental responsiveness to begging has never been tested experimentally. Game theory models, as well as empirical studies, suggest that begging conveys information on offspring state, which implies that parental investm...
متن کاملSex differences in responsiveness to begging in a cooperative mammal.
In species where young are provisioned by both parents, males commonly contribute less to parental care than females, and are less responsive to variation in begging rates. Similar differences in the care of young occur among adults in cooperative breeders, but fewer studies have investigated whether these are associated with differences in responsiveness. Here, we present results from a playba...
متن کاملLife history correlates of alternative migratory strategies in American Dippers.
Partial migration is thought to be a critical step in the evolution of avian migration, but data on the life history correlates of alternative migratory strategies are extremely limited. We have studied a partially migratory population of American Dippers since 1999. This population is composed of sedentary individuals (residents) that maintain the same territory year round and altitudinal migr...
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ژورنال
عنوان ژورنال: Behaviour
سال: 2007
ISSN: 0005-7959,1568-539X
DOI: 10.1163/156853907780713064