In urban fox families, mothers determine which cubs get to stay and which must leave while fathers have little say in the matter, new research by biologists at the University of Bristol has found.
Plants & Animals
Jul 20, 2011
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Being at the very top of a social hierarchy may be more costly than previously thought, according to a new study of wild baboons led by a Princeton University ecologist.
Social Sciences
Jul 14, 2011
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(PhysOrg.com) -- In African cichlid fish society, only the dominant male reproduces. But Stanford researchers have found that if the dominant male disappears, a subordinate cichlid can rise to the procreative occasion with ...
Plants & Animals
Jul 14, 2011
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(PhysOrg.com) -- The brains of all vertebrates display gender-related differences. In songbirds, for example, the size of the brain areas that control their singing behaviour could be linked to the size of their song repertoires. ...
Plants & Animals
Jun 13, 2011
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Female deer do not always choose the bigger and dominant males to mate with, scientists from Queen Mary, University of London and Hartpury College have found.
Plants & Animals
Apr 6, 2011
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A study of chimpanzees has revealed that dominant animals with higher testosterone levels tend to suffer from an increased burden of parasites. Researchers writing in BioMed Central's open access journal BioPsychoSocial Medicine ...
Plants & Animals
Dec 9, 2010
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Less-pretty female house sparrows tend to lower their aim when selecting a mate. Addressing the lack of studies on condition-dependency of female mate choice, researchers writing in the open access journal BMC Evolutionary ...
Evolution
Aug 26, 2010
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Mountain goats are no exception to the general rule among mammals that larger males sire more and healthier offspring. But University of Alberta researcher David Coltman has found a genetic quirk that might make female mountain ...
Plants & Animals
Nov 17, 2009
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Young male lizards in South Africa imitate females to fool aggressive older males into leaving them alone, in an example of transvestism in the natural world, researchers have found.
Plants & Animals
Mar 3, 2009
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