Results 71 to 80 of about 680 (164)

Development of Sarcocystis falcatula in its intermediate host, the Brown-headed Cowbird (Molothrus ater)

Veterinary Parasitology, 2001
Sporocysts of Sarcocystis falcatula obtained from experimentally infected Virginia opossums (Didelphis virginiana) were inoculated orally to 60 wild-caught Brown-headed Cowbirds (Molothrus ater). Another 30 Brown-headed Cowbirds were not challenged and served as uninfected controls.
Department of Pathobiology, College of Veterinary Medicine, University of Florida, Gainesville, FL 32611-0880, USA ( host institution ), Luznar, Shannon L., Avery, Michael L., Dame, John B., MacKay, Robert J., Greiner, Ellis C.   +5 more
openaire   +4 more sources

Rat snakes, cowbirds, and vines lower passerine nest survival in remnant bottomland hardwood forests in east-central Arkansas, USA

Avian Conservation and Ecology, 2021
Predation is often the leading cause of nest failure among passerines; however, specific causes are often unknown or can be misidentified in the field.
Amy L. Wynia, Virginie Rolland, James C. Bednarz   +2 more
doaj  

Brown-headed cowbirds (Molothrus ater) harbor Sarcocystis neurona and act as intermediate hosts

Veterinary Parasitology, 2008
We tested the hypothesis that brown-headed cowbirds (Molothrus ater) harbor Sarcocystis neurona, the agent of equine protozoal myeloencephalitis (EPM), and act as intermediate hosts for this parasite. In summer 1999, wild caught brown-headed cowbirds were collected and necropsied to determine infection rate with Sarcocystis spp.
Departments of Large Animal Clinical Sciences and Microbiology and Molecular Genetics, College of Veterinary Medicine, Michigan State University, East Lansing, MI 48824, USA ( host institution ), Mansfield, L.S., Mehler, S., Nelson, K., Elsheikha, H.M., Murphy, A.J., Knust, B., Tanhauser, S.M., Gearhart, P.M., Rossano, M.G., Bowman, D.D., Schott, H.C., Patterson, J.S.   +12 more
openaire   +3 more sources

Horizontal transmission maintains host specificity and codiversification of symbionts in a brood parasitic host. [PDF]

Commun Biol, 2023
Pedroso LGA, Klimov PB, Mironov SV, OConnor BM, Braig HR, Pepato AR, Johnson KP, He Q, Hernandes FA.   +8 more
europepmc   +1 more source

Springtime bird use of agricultural landscapes examined by using autonomous recording units

Journal of Field Ornithology
Autonomous recording units (ARUs) emerged as a novel technology for avian acoustic monitoring in the 2000s. They have since been primarily used as a substitute for human observers during the breeding season. Autonomous recording units have potential uses
Joseph M. McGovern, Jordan C. Giese, Lisa A. Schulte   +2 more
doaj   +1 more source

Sparrow nest survival in relation to prescribed fire and woody plant invasion in a northern mixed‐grass prairie

Wildlife Society Bulletin, 2017
Prescribed fire is used to reverse invasion by woody vegetation on grasslands, but managers often are uncertain whether influences of shrub and tree reduction outweigh potential effects of fire on nest survival of grassland birds.
Robert K. Murphy, Terry L. Shaffer, Todd A. Grant, James L. Derrig, Cory S. Rubin, Courtney K. Kerns   +5 more
doaj   +1 more source

Sitting in the open: how nest microclimate influences incubation behavior in an open‐cup nesting passerine

Journal of Avian Biology
Incubating passerines modulate their behavior in response to local conditions and changing energetic demands, and nest microclimate can significantly influence female incubation behavior. We tested how ambient temperature affects incubation behavior, and
Kelly A. Williams, Jacob P. Sieg, Laura R. Dykstra, Cheryl R. Dykstra   +3 more
doaj   +1 more source

Are urbanization and brood parasitism associated with differences in telomere lengths in song sparrows?

Journal of Avian Biology
Urbanization reflects a major form of environmental change impacting wild birds globally. Whereas urban habitats may provide increased availability of water, some food items, and reduced predation levels compared to rural, they can also present novel ...
Samuel J. Lane, Ben J. Vernasco, Taylor E. Fossett, Isaac J. VanDiest, Heather E. Watts, Kendra B. Sewall   +5 more
doaj   +1 more source

Nestling condition of a grassland bird is not associated with food availability in restored grasslands

Avian Conservation and Ecology
Grassland bird populations have experienced steep declines in recent decades, necessitating better understanding of factors affecting their reproductive success.
Heather M Kraus, Gregory R Houseman, Mary Liz Jameson, Molly M Reichenborn, W. Alice Boyle, William E Jensen   +5 more
doaj   +1 more source

Urbanization and brood parasitism affect growth, but not free amino acid concentrations in nestling song sparrows (Melospiza melodia)

Frontiers in Bird Science
Urbanization is projected to grow rapidly in the coming decades. Several consequences of this form of anthropogenic change for ecosystems and individuals are described by the fields of urban ecology and urban ecophysiology, respectively.
Isaac J. VanDiest, Samuel J. Lane, Taylor E. Fossett, Kendra B. Sewall   +3 more
doaj   +1 more source