Index Catalog // Hyrax

Schöpfer:: Rivers, James W., Johnson, J. Matthew, Haig, Susan M., Schwarz, Carl J., Burnett, L. Joseph, Brandt, Joseph, George, Daniel, and Grantham, Jesse
Abstract:: Condors and vultures comprise the only group of terrestrial vertebrates in the world that are obligate scavengers, and these species move widely to locate ephemeral, unpredictable, and patchily-distributed food resources. In this study, we used high-resolution GPS location data to quantify monthly home range size of the critically endangered California...
Resource Type:: Article

Schöpfer:: Kelly, Terra R., Grantham, Jesse, George, Daniel, Welch, Alacia, Brandt, Joseph, Burnett, L. Joseph, Sorenson, Kelly J., Johnson, Matthew, Poppenga, Robert, Moen, David, Rasico, James, Rivers, James W., Battistone, Carie, and Johnson, Christine K.
Abstract:: Large-scale poisoning events are common to scavenging bird species that forage communally, many of which are in decline. To reduce the threat of poisoning and compensate for other persistent threats, management, including supplemental feeding, is ongoing for many reintroduced and endangered vulture populations. Through a longitudinal study of lead exposure...
Resource Type:: Article

Schöpfer:: Haig, Susan M., D'Elia, Jesse, Eagles-Smith, Collin, Fair, Jeanne M., Gervais, Jennifer, Herring, Garth, Rivers, James W., and Schulz, John H.
Abstract:: Lead (Pb) is a metabolic poison that can negatively influence biological processes, leading to illness and mortality across a large spectrum of North American avifauna (>120 species) and other organisms. Pb poisoning can result from numerous sources, including ingestion of bullet fragments and shot pellets left in animal carcasses, spent...
Resource Type:: Article

Schöpfer:: Rivers, James W., Johnson, J. Matthew, Haig, Susan M., Schwarz, Carl J., Glendening, John W., Burnett, L. Joseph, George, Daniel, and Grantham, Jesse
Abstract:: Condors and vultures are distinct from most other terrestrial birds because they use extensive soaring flight for their daily movements. Therefore, assessing resource selection by these avian scavengers requires quantifying the availability of terrestrial-based habitats, as well as meteorological variables that influence atmospheric conditions necessary for soaring. In this study,...
Resource Type:: Article

Schöpfer:: Rivers, James W., Young, Sarah, Gonzalez, Elena G., Horton, Brent, Lock, Justin, and Fleischer, Robert C.
Abstract:: Multiple parasitism of host nests by generalist brood parasites reflects the decisions of laying females and may influence the development and behavior of parasitic young. We used microsatellite and mtDNA control-region haplotype data to examine the relatedness of Brown-headed Cowbird (Molothrus ater) offspring in multiply parasitized nests sampled from a...
Resource Type:: Article

Hyrax