On the adjustment of the sex ratio and the gregarious behavior of animal populations.
D000818:Animals; D001522:Behavior, Animal; D005260:Female; D005298:Fertility; D005306:Fertilization; D008297:Male; D008433:Mathematics; D008954:Models, Biological; D011235:Predatory Behavior; D011336:Probability; D012744:Sex Ratio; D012919:Social Behavior