Copulation frequency in birds: why do females copulate more than once with the same male
Article Abstract:
Female birds copulate more than once with the same males to reduce the male birds' chances of copulating with another female. Since female birds compete amongst themselves to secure high quality males, repeated copulation is a means to establish pair bonds and reduce the risk of losing their mate to another female. Further, by preventing extre-pair copulations, females ensure that males have enough sperms for future matings.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Maternal body condition and plasma hormones affect offspring sex ratio in peafowl
Article Abstract:
The relation between maternal quality, offspring sex ratio and plasma concentrations of the reproductive hormones testosterone, 17beta-oestradiol and the principal avian stress hormone corticosterone was investigated using a captive population of peafowl. It was observed that good maternal condition, low plasma corticosterone, and high levels of testosterone were influenced in the male sex ratio and male eggs.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
Peacocks with low mating success are more likely to suffer predation
Article Abstract:
The mating success and survival in lekking blue peafowl, Pavo cristatus, was studied by observing free-ranging blue peafowl. Results showed that peahens prefer mating with males that have more elaborate trains. Peacocks unsuccessful at mating had a lower probability of survival. Peacock selection may be attributed to avoidance of relatively poor genes or the diseases infecting male peacocks.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: When on eye is better than two. Ants match as they march. Homing in on ant navigation
- Abstracts: A random female settlement model can explain polygyny in the corn bunting. Polygyny in the dusky warbler, Phylloscopus fuscatus: the importance of female qualities
- Abstracts: Plume-like neon in a metasomatic apatite from the Australian lithospheric mantle. A mantle metasomatic injection event linked to late Cretaceous kimberlite magmatism
- Abstracts: Captive fledgling American kestrels prefer to play with objects resembling natural prey. The function of feeding chases in the chinstrap penguin, Pygoscelis antartica
- Abstracts: Do garter snakes strike at the eyes of the predators? Congenital responsiveness of garter snakes to a dangerous prey abolished by learning