News tagged with sex ratios

Manipulative mothers subdue show-off sons

The gaudy plumage and acrobatic displays of birds of paradise are a striking example of sexual selection, Charles Darwin's second great theory of evolution. But new research shows that this powerful process may collapse when ...

Sep 12, 2011
5 / 5 (2) 0 | with audio podcast

Early spring means more bat girls

There must be something in the warm breeze. A study on bats by a University of Calgary researcher suggests that bats produce twice as many female babies as male ones in years when spring comes early.

May 05, 2012
5 / 5 (1) 0 | with audio podcast