Roosting behaviour is related to reproductive strategy in brood parasitic cowbirds
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چکیده
منابع مشابه
Incomplete reproductive isolation following host shift in brood parasitic indigobirds.
Behavioural and molecular studies suggest that brood parasitic indigobirds (Vidua spp.) rapidly diversified through a process of speciation by host shift. However, behavioural imprinting on host song, the key mechanism promoting speciation in this system, may also lead to hybridization and gene flow among established indigobird species when and if female indigobirds parasitize hosts already ass...
متن کاملPreformative Molt in Brood Parasitic Screaming (molothrus Rufoaxillaris) and Shiny (m. Bonariensis) Cowbirds
– Molt and plumage cycles are poorly known in Neotropical birds in general and in South American brood parasitic cowbirds in particular. The Screaming Cowbird (Molothrus rufoaxillaris) is one of the more specialized brood parasites that use almost exclusively the Baywing (Agelaioides badius), while the Shiny Cowbird (M. bonariensis) is an extreme generalist brood parasite that uses more than 25...
متن کاملThe wages of violence: mobbing by mockingbirds as a frontline defence against brood-parasitic cowbirds
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متن کاملSex and seasonal differences in hippocampal volume and neurogenesis in brood-parasitic brown-headed cowbirds (Molothrus ater).
Brown-headed cowbirds (Molothrus ater) are one of few species in which females show more complex space use than males. Female cowbirds search for, revisit, and parasitize host nests and, in a previous study, outperformed males on an open field spatial search task. Previous research reported a female-biased sex difference in the volume of the hippocampus, a region of the brain involved in spatia...
متن کاملSex differences in retention after a visual or a spatial discrimination learning task in brood parasitic shiny cowbirds.
Females of avian brood parasites, like the shiny cowbird (Molothrus bonariensis), locate host nests and on subsequent days return to parasitize them. This ecological pressure for remembering the precise location of multiple host nests may have selected for superior spatial memory abilities. We tested the hypothesis that shiny cowbirds show sex differences in spatial memory abilities associated ...
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ژورنال
عنوان ژورنال: Ibis
سال: 2018
ISSN: 0019-1019
DOI: 10.1111/ibi.12587