Caldwell Hahn, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 33
Contrasting determinants of abundance in ancestral and colonized ranges of an invasive brood parasite
Avian species distributions are typically regarded as constrained by spatially extensive variables such as climate, habitat, spatial patchiness, and microhabitat attributes. We hypothesized that the distribution of a brood parasite depends as strongly on host distribution patterns as on biophysical factors and examined this hypothesis with respect to the national distribution of the...
Authors
Caldwell Hahn, R.J. O'Connor
Tetranucleotide microsatellite markers for the Brown-headed Cowbird Molothrus ater
No abstract available.
Authors
Jonathan L. Longmire, J.L. Roach, M. Maltbie, P.S. White, O.L. Tatum, K.D. Makova, Caldwell Hahn
Host selection in the forest interior: cowbirds target ground-nesting species
We investigated patterns of cowbird host selection in a large (1300 ha), unfragmented forest in eastern New York in 1992-3 to determine whether cowbird parasitism rates can be attributed to species-specific traits or to other features associated with nest sites. Nest height was significantly associated with parasitism (P = 0.003) in this community of 23 species (n = 430 nests, 23%...
Authors
Caldwell Hahn, Jeff S. Hatfield
Use of lice to identify cowbird hosts
The host specificity of avian lice (Phthiraptera) may be utilized by biologists to investigate the brood parasitism patterns of Brown-headed Cowbirds (Molothrus ater). As nestlings, brood parasites have a unique opportunity to encounter lice that are typically host specific. Lice are permanent hemimetabolic ectoparasites, a group found strictly on the body of the host, and they are...
Authors
Caldwell Hahn, R.D. Price, Peter C. Osenton
Introduction
No abstract available.
Authors
M.L. Morrison, L.S. Hall, S.K. Robinson, S.I. Rothstein, Caldwell Hahn, T.D. Rich
Science and Products
Filter Total Items: 33
Contrasting determinants of abundance in ancestral and colonized ranges of an invasive brood parasite
Avian species distributions are typically regarded as constrained by spatially extensive variables such as climate, habitat, spatial patchiness, and microhabitat attributes. We hypothesized that the distribution of a brood parasite depends as strongly on host distribution patterns as on biophysical factors and examined this hypothesis with respect to the national distribution of the...
Authors
Caldwell Hahn, R.J. O'Connor
Tetranucleotide microsatellite markers for the Brown-headed Cowbird Molothrus ater
No abstract available.
Authors
Jonathan L. Longmire, J.L. Roach, M. Maltbie, P.S. White, O.L. Tatum, K.D. Makova, Caldwell Hahn
Host selection in the forest interior: cowbirds target ground-nesting species
We investigated patterns of cowbird host selection in a large (1300 ha), unfragmented forest in eastern New York in 1992-3 to determine whether cowbird parasitism rates can be attributed to species-specific traits or to other features associated with nest sites. Nest height was significantly associated with parasitism (P = 0.003) in this community of 23 species (n = 430 nests, 23%...
Authors
Caldwell Hahn, Jeff S. Hatfield
Use of lice to identify cowbird hosts
The host specificity of avian lice (Phthiraptera) may be utilized by biologists to investigate the brood parasitism patterns of Brown-headed Cowbirds (Molothrus ater). As nestlings, brood parasites have a unique opportunity to encounter lice that are typically host specific. Lice are permanent hemimetabolic ectoparasites, a group found strictly on the body of the host, and they are...
Authors
Caldwell Hahn, R.D. Price, Peter C. Osenton
Introduction
No abstract available.
Authors
M.L. Morrison, L.S. Hall, S.K. Robinson, S.I. Rothstein, Caldwell Hahn, T.D. Rich