News tagged with success

Are elder siblings helpers or competitors?

Having elder siblings decreases mortality risk in childhood, but same-sex elder siblings are associated with lower marriage rates and fewer children for their younger siblings in adulthood, according to the results of a long-term ...

dateNov 22, 2012 in Social Sciences
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Cuckolded males sing louder

The song of male songbirds is multifaceted and has two main functions: to repel rivals and to attract mates. Females often pay attention to certain features within a song, such as the presence of special syllables, to assess ...

dateAug 23, 2012 in Plants & Animals
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