title: Constraints on evolutionary shifts in cooperative breeding.
authors: Animal Ecology Group, Centre for Ecological and Evolutionary Studies, University of Groningen, PO Box 14, 9750 AA Haren, The Netherlands. j.komdeur@rug.nl
authors: Jan
authors: J
authors: Komdeur
mesh_terms: D000533:Altruism; D000818:Animals; D001522:Behavior, Animal; D005075:Biological Evolution; D003299:Cooperative Behavior; D006379:Helping Behavior; D008954:Models, Biological; D012098:Reproduction; D012726:Sexual Behavior, Animal