The risk of predation enhances cooperation among prey individuals in a songbird
: Krams I, Bērziņš A, Krama T, Wheatcroft D, Igaune K, Rantala M J
: 2010
: Proceedings of the Royal Society B: Biological Sciences
: 1681
: 277
: 1681
: 513
: 518
: 6
: 0962-8452