Having relations around to help look after the kids lets mothers ease off and save energy for the next lot, a study of Australian cooperative birds shows.

Biology - Plants & Animals

Oct 24, 2012 3 / 5 (1) 1 |

Most animals don't spend nearly as much time and energy defending nesting or mating sites against intruders outside the breeding season. That's a given.

Biology - Plants & Animals

Feb 01, 2012 4 / 5 (1) 0 |

Like gangsters running a protection racket, drongos in the Kalahari Desert act as lookouts for other birds in order to steal a cut of their food catch. The behaviour, revealed in research funded by the Biotechnology ...

Biology - Evolution

Nov 18, 2010 5 / 5 (1) 0 |