Temporal patterns of host availability, brown-headed cowbird brood parasitism, and parasite egg mass

@article{Strausberger1998TemporalPO,
  title={Temporal patterns of host availability, brown-headed cowbird brood parasitism, and parasite egg mass},
  author={Bill M. Strausberger},
  journal={Oecologia},
  year={1998},
  volume={116},
  pages={267-274}
}
  • B. Strausberger
  • Published 1 August 1998
  • Environmental Science, Biology
  • Oecologia
Abstract I studied relationships between temporal patterns of host availability, brood parasitism, and egg mass for the parasitic brown-headed cowbird (Molothrus ater). At a study site consisting largely of edge habitat in north-eastern Illinois, I found 834 bird nests from 27 species. A total of 407 cowbird eggs and nestlings were found in these nests over three laying seasons. Nearly all (n= 379; 93%) were found in the nests of seven host species. For these species and all taken together… 
Community-level patterns of parasitism: Use of three common hosts by a brood parasitic bird, the brown-headed cowbird1
TLDR
It is suggested that host quality may explain the higher than expected use of song sparrows and factors that alter the relative availability of hosts, such as host breeding synchrony, may modify the parasitism levels experienced by different hosts.
Community-level patterns of population recruitment in a generalist avian brood parasite, the brown-headed cowbird
TLDR
Cowbird recruitment was diverse with respect to hosts but was less evenly distributed across the host community than was cowbird egg investment, which may be associated with the larger body size of tanagers relative to other hosts.
Community-Level Patterns of Host Use by the Brown-Headed Cowbird (Molothrus ater), a Generalist Brood Parasite
TLDR
The results indicate that cowbirds in northeast Kansas differentially parasitize hosts, that most cowbird eggs are laid in the nests of a small number of host species, and that the Dickcissel appears to be preferred over other hosts.
High Levels of Relatedness between Brown-Headed Cowbird (Molothrus ater) Nestmates in a Heavily Parasitized Host Community
TLDR
Evidence that laying decisions of female cowbirds were constrained is found, which suggests that heavy parasitism levels were due to a high degree of competition for host nests.
Host use and fecundity of individual female brown-headed cowbirds
TLDR
The results suggest that female laying behaviour lies on a gradient between the two extreme categories of pure ‘shotgun’ or ‘host selection’ laying behaviours, and females may optimize their reproductive effort by varying their behaviours as environmental conditions dictate.
Rates of parasitism, but not allocation of egg resources, vary among and within hosts of a generalist avian brood parasite
TLDR
It is found that the probability of being parasitized by cowbirds, controlling for host status as a cowbird egg accepter or rejecter and ordinal date, varied significantly among host species, indicating an apparent preference for some hosts.
Site selection and repeatability in Brown-Headed Cowbird (Molothrus ater) parasitism of Eastern Phoebe (Sayornis phoebe) nests
TLDR
Observations on patterns of Brown-headed Cowbird parasitism on Eastern Phoebes (Sayornis phoebe) across 2 years suggested that parasitism occurred at above chance levels during the first rather than the second nesting attempts and at nests located under eaves rather than bridges.
Molecular tracking of individual host use in the Shiny Cowbird – a generalist brood parasite
TLDR
Overall, female shiny cowbirds use a spatially structured and host species specific approach for parasitism, but they do so nonexclusively, resulting in both detectable levels of multiple parasitism and generalism at the level of individual parasites.
Genetic elucidation of host use by individual sympatric bronzed cowbirds (Molothrus aeneus) and brown-headed cowbirds (M. ater)
TLDR
It was found that each species of cowbird used primarily four host species, with minimal overlap in the species used, yet at least some individuals acted as generalists.
Shiny Cowbird parasitism of a low quality host: effect of host traits on a parasite's reproductive success
The reproductive success of parasitic cowbirds (Molothrus spp.) varies among host species and is influenced by the degree of synchronization in timing of egg laying, the duration of parasite and host
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