AVIS-IBIS

Birds of Indian Subcontinent

Cooperative Breeding in Gray Jays: Philopatric Offspring Provision Juvenile Siblings

Publication Type:Journal Article
Year of Publication:1997
Authors:Waite, TA, Strickland, D
Journal:The Condor
Volume:99
Issue:2
Date Published:1997
ISBN Number:00105422
Keywords:Corvidae, Garrulus, Garrulus glandarius, Perisoreus, Perisoreus canadensis
Abstract:We present evidence for cooperative breeding in Gray Jays (Perisoreus canadensis), a species characterized by delayed dispersal but long thought not to exhibit the life-history tactic of helping. Our findings to date suggest that the alloparental care of younger siblings by philopatric yearlings is confined to the post-fledging period of nutritional dependence. We encourage other workers to investigate whether helping may be confined to this period in other semi-social species as well. Ongoing work is aimed at evaluating the fitness consequences of helping in our study population.
URL:http://www.jstor.org/stable/1369960
Short Title:The Condor
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith