News tagged with reproductive success

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Do hormones dictate breeding success in birds?

(PhysOrg.com) -- Some animals produce more offspring than others do. Hormones like prolactin and corticosterone can exercise a crucial influence on the behaviour of birds in the breeding season and therefore on their reproductive ...

dateJan 25, 2011 in Plants & Animals
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Key to evolutionary fitness: Cut the calories

Charles Darwin and his contemporaries postulated that food consumption in birds and mammals was limited by resource levels, that is, animals would eat as much as they could while food was plentiful and produce as many offspring ...

dateJul 01, 2009 in Evolution
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Honest deer every year

The vocalisations or 'groans' of male fallow deer provide rivals and potential mates with an honest account of the emitting animal's competitive abilities. A study, published in the open access journal BMC Biology, describes ...

dateApr 09, 2010 in Plants & Animals
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