Evolution of human sex roles more complex than described by universal theory
The more feathers a male sparrow carries to the nest, the more eggs the female will lay
An international team lead by the University of Granada has found that female sparrows will invest more energy into laying eggs according to the male's ability to fill the nest with feathers which serve to ...
May 07, 2013
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The origins of laughter
We know the benefits of laughter on health. But why do we laugh? What are the evolutionary origins of laughter and humour? Steven Légaré has asked these questions and has made them the subject of his master's ...
Mar 27, 2013
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Cupid's arrow: Research illuminates laws of attraction
We've heard the clichés: "It was love at first sight," "It's inner beauty that truly matters," and "Opposites attract." But what's really at work in selecting a romantic or sexual partner?
Feb 08, 2013
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A new fish species from Lake Victoria named in honor of the author of Darwin's Dreampond
Two new species of cichlid fish from Lake Victoria are described by biologists from Naturalis Biodiversity Center (Research Department Marine Zoology) and the Institute of Biology Leiden (Section Integrative ...
Jan 02, 2013
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Beetle mating requires strong grip as defensive behavior
Sexual selection in the Forked Fungus Beetle favors larger body and horn size, and a new study investigates the relationship between these traits and the beetles' grip strength, which is crucial for the male ...
Aug 15, 2012
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Color of robins' eggs determines parental care
A male robin will be more diligent in caring for its young if the eggs its mate lays are a brighter shade of blue.
May 14, 2012
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Brawn and speed make the grade during mate selection
Do more efficient and faster male birds win females over? New research from the United Kingdom suggests that the rock ptarmigan, the Arctic cousin of the grouse, does. University of Manchester researchers ...
Sep 12, 2011
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Female mate choice enhances offspring fitness in an annual herb
In many organisms females directly or indirectly select mates (or sperm) and potentially influence the fitness of their offspring. Mate choice and sexual selection in plants is more complex in some ways than ...
Jun 27, 2011
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Female deer confirm bigger is not always better when choosing a mate
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.
Apr 06, 2011
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Research finds men with macho faces attractive to fertile women
(PhysOrg.com) -- When their romantic partners are not quintessentially masculine, women in their fertile phase are more likely to fantasize about masculine-looking men than are women paired with George Clooney types.
Jan 10, 2011
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Brain size and a trip to Disneyland: How parental concerns could increase the size of our creative brains
Female fish flaunt fins to attract a mate
Ugly Betty forced to aim for Average Joe
