PaternitySexual Behavior, AnimalPaternal BehaviorFather-Child RelationsPair BondCannibalismReproductionMicrosatellite RepeatsChild WelfareChild BehaviorMothersCopulationDisabled ChildrenMating Preference, AnimalFathersParentsCompetitive BehaviorChild RearingSocial DominanceChild of Impaired ParentsParent-Child RelationsFertilizationChild Behavior DisordersIllegitimacySex RatioPollinationChild Health ServicesChild PsychologyPasseriformesSpermatozoaNesting BehaviorProbabilityPregnancyFertilityParentingPollenSongbirdsChild, InstitutionalizedPedigree