Biological Clock Ticks Slower for Female Birds Who Choose Good Mates

Biological Clock Ticks Slower for Female Birds Who Choose Good Mates
Tue, 18 Jan 2011 16:43:00 -0600

In birds as in humans, female fertility declines with age.

But some female birds can slow the ticking of their biological clocks by choosing the right mates, according to results of a study published online last week in the journal Oikos.

Female birds become progressively less fertile as age takes its toll, says biologist Josh Auld of the National Evolutionary Synthesis Center in Durham, North Carolina, and co-author of the Oikos paper.

Older females lay ...

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