title: Animal behaviour: fickle females?
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Ryan
mesh_terms: D000375:Aging / Q000502:physiology*; D000818:Animals; D005075:Biological Evolution; D001717:Birds / Q000254:growth & development / Q000502:physiology*; D005260:Female; D008297:Male; D012727:Sex Characteristics; D012726:Sexual Behavior, Animal / Q000502:physiology*