ScienceDaily Posted June 24, 2016 Share Posted June 24, 2016 Sparrows form pair bonds that are normally monogamous, but many females are unfaithful to their partner and have offspring with other males. Biologists believe that the male birds are unfaithful to ensure they father as many chicks as they can, while females are unfaithful with males of better 'genetic quality' -- ones that are fitter and could produce stronger offspring. But new research shows that cheating comes with a cost -- the cheating female's partner will provide less food for their nest of young. Read the full article on ScienceDaily Link to comment Share on other sites More sharing options...
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