Temporary male removal increases extra-pair paternity in eastern bluebirds
Article Abstract:
Female eastern bluebirds produce more extra-pair young in the temporary absence of their mates during egg laying than females whose mates are present during egg laying. The absence of original male mates is likely to be compensated by replacement males. Female birds behave like widowed or deserted birds in the absence of their mates and indulge in extra-pair copulations in an attempt to attract replacement males to care for their young ones. The temporary absence of male mates releases females from mate-guarding, enabling them to seek extra-pair copulations with other males.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1996
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Effects of body size and home range on access to mates and paternity in male bridled nailtail wallabies
Article Abstract:
Male bridled nailtail wallabies, Onychogalea fraenata, with larger home ranges associate more with oestrous females, according to research involving studying the mating system of free-ranging wallabies over three years. This is probably because wide-ranging males have the highest encounter rates with females. Home range size is not related to male body weight, despite a 10-fold variation in male home range size. However, body weight is strongly connected with priority of access to oestrous females.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1999
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Males on guard: paternity defences in violet-green swallows and tree swallows
Article Abstract:
Environmental conditions influence the paternity defence behavior in male violet-green and tree swallows. A study with these species of birds indicate that violet-green males tend more to guard their mates than nests, whereas male tree swallows do vice versa. Violet-green males seem to face higher competition for females than for nest sites. Different availabilities of nest sites and mates may be the reason for the difference in paternity defence between the two species.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
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