Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Spinus tristis"'
Publikováno v:
Environmental Toxicology and Chemistry
In March 2017, 26 American goldfinches (Spinus tristis) were found dead following a drench application of imidacloprid in California (USA). Identical seed fragments were present in the digestive tracts. Imidacloprid was detected in 4 separate pooled
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba4279982a37af9c46e47cafad0c98ea
http://europepmc.org/articles/PMC6852563
http://europepmc.org/articles/PMC6852563
Autor:
Gary R. Graves
Publikováno v:
Southeastern Naturalist. 17:293-297
The ornamental plant Lagerstroemia indica (Crapemyrtle) was introduced to American gardens before 1796, but little is known about its use as a food resource by avian species. Local wintering populations of Spinus tristis (American Goldfinch), Junco h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2823bd12afd05d52e6c0a2e94621e9d
https://doi.org/10.1656/058.017.0212
https://doi.org/10.1656/058.017.0212
Autor:
W. Herbert Wilson, Paul J. Dougherty
Publikováno v:
The Open Ornithology Journal. 11:1-26
Background:Many bird species that breed at high latitudes exhibit irregular southward incursions in response to spatial and temporal variation in winter food availability.Methods:We analyzed Christmas Bird Count records to compare the migratory behav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18c370522c561c4295c419451349fbba
https://doi.org/10.2174/1874453201811010001
https://doi.org/10.2174/1874453201811010001
Publikováno v:
The Birds of North America Online.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2fa6a87684bdf4c98700f38163f3a84
https://doi.org/10.2173/bna.amegfi.02.1
https://doi.org/10.2173/bna.amegfi.02.1
Publikováno v:
Ecology and Evolution
Male and female American goldfinches (Spinus tristis) express condition-dependent carotenoid-based plumage and bill coloration. Plumage color is relatively static, as pigments incorporated into feathers during the spring molt cannot be mobilized ther
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4505eb2bca49ca5475d3798ac52a5111
https://doi.org/10.1002/ece3.1164
https://doi.org/10.1002/ece3.1164
Autor:
Lucy M. Cevallos, Tiffany T. Pham, Troy G. Murphy, Richard K. Simpson, Joe A. West, Keith A. Tarvin
Publikováno v:
Animal Behaviour. 93:121-127
In species in which both sexes have similar ornamentation, the ornaments often function as sexual or social signals in both sexes. However, males and females may use ornaments in different signalling contexts. We previously demonstrated that caroteno
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45ce002d51bbdc8f74b53319fc30353d
https://doi.org/10.1016/j.anbehav.2014.04.034
https://doi.org/10.1016/j.anbehav.2014.04.034
Publikováno v:
Journal of Avian Biology. 45:22-28
Status signals are linked to fi ghting ability and enable competitors to gain access to resources without risking injury in aggressive combat. Th e relationship between testosterone (T), a hormone that mediates aggression, and signals of status is we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fbb8f935be36fe0ffe6ead5a5d8980a
https://doi.org/10.1111/j.1600-048x.2013.00286.x
https://doi.org/10.1111/j.1600-048x.2013.00286.x
Autor:
Adrian Surmacki, Geoffrey E. Hill
Publikováno v:
Acta Ethologica
Preening behavior in birds is important for the maintenance of thermoregulatory and ornamental functions of plumage. It has been repeatedly demonstrated that birds trade off time between plumage maintenance and other activities. However, the conditio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7ad734de8e11014f84631e8b004c89a
https://doi.org/10.1007/s10211-013-0159-z
https://doi.org/10.1007/s10211-013-0159-z
Autor:
David L. Swanson, Marisa O. King
Publikováno v:
Current Zoology. 59:439-448
Studies of metabolic variation in birds have involved both wild and captive individuals, but few studies have investigated whether captivity directly influences metabolic rates, despite such variation potentially confounding conclusions regarding how
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95d6df60d10fde014455fd4118d23ff5
https://doi.org/10.1093/czoolo/59.4.439
https://doi.org/10.1093/czoolo/59.4.439
Publikováno v:
Journal of Wildlife Diseases. 49:49-54
We performed experiments to test if American Goldfinches (Spinus tristis) could be a competent reservoir for Mycoplasma gallisepticum and play a role in the epidemic spread of mycoplasmal conjunctivitis among House Finches (Carpodacus mexicanus) in N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b282b7f8600b8187fb31e27f99c9de44
https://doi.org/10.7589/2012-02-046
https://doi.org/10.7589/2012-02-046