Family-based winter territoriality in western bluebirds, Sialia mexicana: the structure and dynamics of winter groups
Article Abstract:
A new study investigates winter territoriality and groupings in flocks of cooperatively breeding western bluebirds.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 2001
User Contributions:
Comment about this article or add new information about this topic:
Facultative sex ratio adjustment by western bluebird mothers with stay-at-home helpers-at-the-nest
Article Abstract:
The hypothesis that nonbreeding, stay-at-home helpers indicate poor breeding prospects for locally competing sons is tested and an investigation on one prediction of this hypothesis that such helpers indicate a tendency for parents to produce substandard sons is presented. Experiments indicated that the ability of male western bluebirds to breed is constrained primarily by the availability of breeding females rather than the availability of space or seasonal constraints on independent breeding.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 2004
User Contributions:
Comment about this article or add new information about this topic:
Male detention affects extra-pair copulation frequency and pair behaviour in western bluebirds
Article Abstract:
The hypothesis that male bluebirds (Silia mexicana) prevent extra-pair copulations by guarding their mates was tested using 1-h detention experiments. Male detention increased the frequency of extra-pair copulations in western bluebirds but resulted in selective participation of the females in extra-pair matings. It was found that extra-pair copulations were not influenced by male existence, quality of extra-pair male's territory or phenotypic characteristics of the extra-pair male relative to those of the females should be considered.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Interspecific territoriality in Calopteryx damselflies: the role of secondary sexual characters. Colour, fat and social status in male damselflies, Calopteryx maculata
- Abstracts: A role of her own: female cowbirds, 'Molothrus ater', influence the development and outcome of song learning. The case for developmental ecology
- Abstracts: Does vulnerability influence trade-offs made by whelks between predation risk and feeding opportunities? Aggregation of whelks, Buccinum undatum, near feeding predators: the role of reproductive requirements
- Abstracts: Effects of light and presence of fish on lure display and larval release behaviours in two species of freshwater mussels