Reproductive synchrony and extra-pair mating strategy in a socially monogamous bird, Dendroica petechia
Article Abstract:
Male and female fitness can be altered by extra-pair mating, therefore it is likely that special reproductive schemes have evolved. A new study investigates the extra-pair mating strategy and reproductive synchrony in the yellow warbler, a socially monogamous species. It is shown that male warblers initiate extra-pair mating, but the behaviour is reduced if their social partner is fertile. The effect of synchrony on extra-pair mating appears to be influenced by the plumage and size of males.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1997
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Effects on female reproductive success of familiarity and experience among male red-winged blackbirds
Article Abstract:
The findings of a study of red-winged blackbirds, Agelaius phoenicus, in Washington has suggested that females are inclined to nest in areas of males that are acquainted with their neighbors, probably because familiar males help in nest defense. Data given from a study in Ontario suggests that an average of 55% of territorial males returned from one year to the next, and of those, 81% reoccupied their earlier territories, so males were usually familiar with each other.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1995
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Cuckoldry and lack of parentage-dependent paternal care in yellow warblers: a cost-benefit approach
Article Abstract:
The amount and extent of parental care given by male yellow warblers was analyzed to determine whether paternal care differs between affiliated and unaffiliated offspring. Results showed that male warblers did not exhibit special paternal care over offspring which they sired. The results contradict theoretical models suggesting that yellow warblers exhibited lower parental care when their parentage has been reduced by extra-pair fertilizations.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1996
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