Results 241 to 250 of about 245,686 (291)
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Journal für Ornithologie, 1994
Brown-headed Cowbirds Molothrus ater are very social birds. Males have a rich vocal repertoire, and much of their social behavior is mediated by vocalizations. For example, subtle differences in song reflect dominance status and are used by females during mate choice.
Alan M. Dufty, H. Nakamura
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Brown-headed Cowbirds Molothrus ater are very social birds. Males have a rich vocal repertoire, and much of their social behavior is mediated by vocalizations. For example, subtle differences in song reflect dominance status and are used by females during mate choice.
Alan M. Dufty, H. Nakamura
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2005
Abstract Brood parasitism is the most fascinating feature of cuckoo biology. Cuckoo parasites use other species to rear their young, and how the behavior evolved as a reproductive strategy demands an explanation (Darwin 1859, Hamilton 1972).
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Abstract Brood parasitism is the most fascinating feature of cuckoo biology. Cuckoo parasites use other species to rear their young, and how the behavior evolved as a reproductive strategy demands an explanation (Darwin 1859, Hamilton 1972).
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Conspecific Brood Parasitism and Population Dynamics
The American Naturalist, 2008Conspecific brood parasitism (CBP), defined as parasitic laying of eggs in a conspecific nest without providing parental care, occurs in insects, fishes, amphibians, and many birds. Numerous factors have been proposed to influence the evolution of CBP, including nest site limitation; effects of brood size, laying order, or parasitic status on offspring
Perry, de Valpine, John M, Eadie
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1997
Abstract The evolutionary, ecological and behavioral questions posed by obligate brood parasites are among the most intriguing of all contemporary ornithological topics. Avian brood parasites lay their eggs in the nests of other birds and may be a major contributing factor driving several species of songbirds to near extinction.
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Abstract The evolutionary, ecological and behavioral questions posed by obligate brood parasites are among the most intriguing of all contemporary ornithological topics. Avian brood parasites lay their eggs in the nests of other birds and may be a major contributing factor driving several species of songbirds to near extinction.
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An Overview of Brood Parasitism
1997Abstract Laying eggs in the nest of another individual, and allowing or tricking the nest owner to rear such “parasitic” young rather than, or in addition to, its own, is one of the rarest forms of reproduction known. Except for the social insects, in which intraspecific brood parasitism is sometimes well developed (Wilson, 1971), such ...
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Relatedness and the Evolution of Conspecific Brood Parasitism
The American Naturalist, 2001In conspecific brood parasitism (CBP), a parasitic female takes advantage of the parental care performed by a host female by laying eggs in the nest of the host. The host female raises the offspring of the parasitic female as well as her own. In species where local females are related, direct costs for the host might be more than compensated for by ...
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Parasitic Behaviour of Interspecific Brood Parasitic Females
2017Interspecific avian brood parasites have to solve unique problems associated with their reproductive habit: they need to recognize potential hosts, search for and locate their nests, monitor nests progress and return to them at the appropriate time for egg laying.
Reboreda, Juan Carlos +4 more
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What's bugging brood parasites?
Trends in Ecology & Evolution, 2001Brown-headed cowbirds (Molothrus ater) might reduce populations of the songbird species they parasitize, including endangered species. Data are therefore needed on the frequency with which cowbirds use different species of foster parents. Hahn et al.
, Clayton, , Johnson
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Cuckoos, cowbirds and the persistence of brood parasitism
Trends in Ecology & Evolution, 1999Brood parasites provide a particularly good opportunity for the study of host-parasite evolution because they directly affect the reproductive success of their hosts. Two parasitic species, the common cuckoo (Cuculus canorus) and the brown-headed cowbird (Molothrus ater), differ widely in their relationships with their hosts, yet share the attribute of
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1997
Abstract Avian brood parasitism is the association between a bird (the parasite) that lays its eggs in the nests of another (the foster or host species), thus gaining the care of the foster parent. The young brood parasite takes the food that the foster parents bring for their own young, often at a cost of the survival of the foster ...
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Abstract Avian brood parasitism is the association between a bird (the parasite) that lays its eggs in the nests of another (the foster or host species), thus gaining the care of the foster parent. The young brood parasite takes the food that the foster parents bring for their own young, often at a cost of the survival of the foster ...
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