Distinguishing between female sperm choice versus male sperm competition: a comment on Birkhead.
Reproductive Biology and Behaviour Group, Research Centre for Ornithology of the Max Planck Society, Starnberg, Seewiesen, Germany. b.kempenaers@erl.ornithol.mpg.de
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D000818:Animals; D002755:Choice Behavior; D005260:Female; D008297:Male; D008954:Models, Biological; D012726:Sexual Behavior, Animal; D013094:Spermatozoa / Q000502:physiology*