Do life-history traits in the ancestor of Cowbirds (Molothrus spp.) predispose them to become brood parasites?

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Hamilton & Orians (1965) stated that the non-parasitic ancestor of cowbirds accelerated its incubation period and nestling growth. Later, by comparing cowbirds with nesting birds, it was suggested that those characteristics, together with small eggs with thicker eggshell, were adaptations. When...

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Detalles Bibliográficos
Autores principales: Manuela Pujol, E., Mermoz, M.E.
Formato: JOUR
Materias:
Adaptations
Allometric equation
Ancestor reconstruction
Brood parasites
Cowbirds
Egg mass
Exaptations
Incubation period
Molothrus
Nestling asymptotic body mass
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10754377_v22_n4_p553_ManuelaPujol
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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