Egg pecking and puncturing behaviors in shiny and screaming cowbirds: effects of eggshell strength and degree of clutch completion

Abstract: Shiny cowbirds (Molothrus bonariensis) are generalist brood parasites that use hosts varying in body and egg size. On the contrary, screaming cowbirds (M. rufoaxillaris), which are larger than shiny cowbirds, are host specialist that use mainly one host of similar body and egg size. Both p...

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Detalles Bibliográficos
Autores principales:	Cossa, N.A., Tuero, D.T., Reboreda, J.C., Fiorini, V.D.
Formato:	JOUR
Materias:	Brood parasitism Farming hypothesis Molothrus bonariensis Molothrus rufoaxillaris Reduction of competition hypothesis brood parasitism clutch size egg size eggshell generalist hypothesis testing nesting behavior passerine specialist Aves Molothrus Troglodytes
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_03405443_v71_n4_p_Cossa
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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