Publications
This is a list of publications written by Patuxent employees since Patuxent opened in 1939. To search for Patuxent's publications by author or title, please click below to go to the USGS Publication Warehouse.
Filter Total Items: 8128
Effects of fasting and refeeding on body composition of captive gray wolves (Canis lupus) Effects of fasting and refeeding on body composition of captive gray wolves (Canis lupus)
We examined the effects of fasting and refeeding on body composition in 9 captive adult gray wolves, Canis lupus (6 males, 3 females), during May-June 1995. Body composition was estimated by the technique of tritiated water dilution. Wolves were immobilized and weighed, baseline blood samples were taken, tritiated water was injected, and additional blood samples were taken before fasting
Authors
T.J. Kreeger, G. D. DelGiudice, L.D. Mech
A citywide breeding bird survey for Washington, DC A citywide breeding bird survey for Washington, DC
`DC Birdscape' was initiated in 1993 to systematically count the birds occurring throughout Washington D.C. during the breeding season. It involved a coordinated planning effort and partnership between the Audubon Naturalist Society, the National Park Service, and the National Biological Survey, and engaged the participation of more than 100 volunteers. A method for rapidly assessing the...
Authors
J. Hadidian, J.R. Sauer, C. Swarth, P. Handly, Sam Droege, C. Williams, J. Huff, G. Didden
Reproduction of black-crowned night-herons related to predation and contaminants in Oregon and Washington, USA Reproduction of black-crowned night-herons related to predation and contaminants in Oregon and Washington, USA
We studied reproductive characteristics of Black-crowned Night-Herons (Nycticorax nycticorax) at four colonies in south central Washington and one colony in north central Oregon in 1991. Nest success, adjusted using the Mayfield method, was significantly different between colonies and ranged from 12-84% to hatching and 12-73% to 14 days post-hatching. The mean number of young surviving...
Authors
L. J. Blus, Barnett A. Rattner, M. J. Melancon, Charles J. Henny
Another instance of a Carolina chickadee laying eggs in two nests Another instance of a Carolina chickadee laying eggs in two nests
No abstract available.
Authors
R. B. Clapp, A.C. Mellinger
Carolina chickadee 'incubates' eggless nest Carolina chickadee 'incubates' eggless nest
No abstract available.
Authors
R. B. Clapp
Secondary poisoning of kestrels by white phosphorus Secondary poisoning of kestrels by white phosphorus
Since 1982, extensive waterfowl mortality due to white phosphorous (P4) has been observed at Eagle River Flats, a tidal marsh near Anchorage, Alaska. Ducks and swans that ingest P4 pellets become lethargic and may display severe convulsions. Intoxicated waterfowl attract raptors and gulls that feed on dead or dying birds. To determine if avian predators can be affected by secondary...
Authors
Donald W. Sparling, Nicholas E. Federoff
Cytochrome P450 and organochlorine contaminants in black-crowned night-herons from the Chesapeake Bay region, USA Cytochrome P450 and organochlorine contaminants in black-crowned night-herons from the Chesapeake Bay region, USA
Black-crowned night-heron (Nycticorax nycticorax) offspring were collected from a relatively uncontaminated coastal reference site (next to Chincoteague National Wildlife Refuge, VA, USA) and two sites in the Chesapeake Bay watershed (Baltimore Harbor, MD and Rock Creek Park, Washington, DC, USA). Hepatic microsomal activities of benzyloxyresorufin-O-dealkylase and ethoxyresorufin-O...
Authors
Barnett A. Rattner, Mark J. Melancon, Clifford P. Rice, Walter Riley, John D. Eisemann, Randy K. Hines
Po'ouli (Melamprosops phaeosoma) Po'ouli (Melamprosops phaeosoma)
No abstract available.
Authors
T.K. Pratt, C. B. Kepler, T.L.C. Casey
Effects of harvest restrictions on black duck harvest and populations trends Effects of harvest restrictions on black duck harvest and populations trends
No abstract available.
Authors
J.R. Serie, R.E. Trost, J.R. Sauer
Acidification of experimental wetlands: Effects on wetland productivity and survival of juvenile black ducks Acidification of experimental wetlands: Effects on wetland productivity and survival of juvenile black ducks
Six man-made wetlands (0.02 ha each) and pen-reared broods of American black ducks (Anas rubripes) were used to assess the effects of reduced pH on the quality of fish- free, palustrine habitat for brood rearing. Acid treatment was assigned randomly among newly constructed wetlands during April through June 1984-85, to simulate depressed pH from snowmelt and spring rain. Sampling of...
Authors
G.M. Haramis, Diane S. Chu, C.M. Bunck, T.M. Mingo, W.W.R. Schaffner
Breeding habitat workshop Breeding habitat workshop
No abstract available.
Authors
Keith McAloney, J. R. Longcore
Black duck production workshop Black duck production workshop
No abstract available.
Authors
D.G. Krementz, A. Reed