Group breeding dramatically increases reproductive success of yearling but not older female scrubwrens: a model for cooperatively breeding birds?
1. Many studies of cooperatively breeding birds have found no effect of group size on reproductive success, contrary to predictions of most adaptive hypotheses. A model is proposed for variation in group-size effects: group size has a reduced effect on success when conditions for breeding are good, such as in good environmental conditions or in groups with older breeders. This hypothesis is tested with a case study of white-browed scrubwrens Sericornis frontalis and a review of the literature....[Show more]
|Collections||ANU Research Publications|
|Source:||Journal of Animal Ecology|
|01_Magrath_Group_breeding_dramatically_2001.pdf||705.31 kB||Adobe PDF||Request a copy|
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