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
Sublethal landrin toxicity: Behavioral and physiological effects on captive vultures Sublethal landrin toxicity: Behavioral and physiological effects on captive vultures
Use of conditioned taste aversion (CTA) has been proposed to reduce consumption of California condor (Gymnogyps californianus) eggs by ravens (Corvus corax). Although landrin has induced aversions in ravens and other birds, no data were available on behavioral and physiological effects of landrin on condors, non-target birds that might consume treated eggs. Because condors are endangered...
Authors
D.L. Forthman-Quick, E. F. Hill
Wind tunnel experiments to assess the effect of back-mounted radio transmitters on bird body drag Wind tunnel experiments to assess the effect of back-mounted radio transmitters on bird body drag
The aerodynamic drag of bird bodies was measured in a wind tunnel, with and without back-mounted dummy radio transmitters. Flight performance estimates indicate that the drag of a large transmitter can cause a substantial reduction of a migrant’s range, that is, the distance it can cover in non-stop flight. The drag of the transmitter can be reduced by arranging the components in an...
Authors
H.H. Obrecht, C.J. Pennycuick, M.R. Fuller
Large osprey colony discovered in Oregon in 1899 Large osprey colony discovered in Oregon in 1899
No abstract available.
Authors
Charles J. Henny
Observation of directional thermal soaring preference in vultures Observation of directional thermal soaring preference in vultures
No abstract available.
Authors
Holliday H. Obrecht
A field test for differences in condition among trapped and shot mallards A field test for differences in condition among trapped and shot mallards
We tested predictions from the condition bias hypothesis (Weatherland and Greenwood 1981) regarding the effects of sampling methods of body weights of mallards (Anas platyrhynchos) at White River National Wildlife Refuge (WRNWR), Arkansas, during 24 November-8 December 1985. Body weights of 84 mallards caught with unbaited rocket nets in a natural wetland were used as experimental...
Authors
Kenneth J. Reinecke, Charles W. Shaiffer
Environmental contaminants in California condors Environmental contaminants in California condors
Five wild California condors (Gymnogyps californianus) that died in 1980-86 were necropsied and tissues were analyzed for environmental contaminants. Three died of lead (Pb) poisoning, 1 presumably of cyanide (CN) poisoning, and 1 nestling of handling shock. Organochlorine concentrations were low in 4 condors that were analyzed for these contaminants. Blood samples from 14 wild and 14...
Authors
Stanley N. Wiemeyer, J. Michael Scott, Marilyn P. Anderson, Peter H. Bloom, Charles J. Stafford
The effects of hunting on survival rates of American black ducks The effects of hunting on survival rates of American black ducks
Using data from 10 preseason and 10 winter major reference areas from 1950-83, the authors tested hypotheses regarding the effects of hunting on the survival and recovery rates of the American black duck (Anas rubripes). Although estimates of the proportion of total annual mortality due to hunting are low (35% for ad and 45% for young) compared to Blandin's (1982) estimates, mean...
Authors
David G. Krementz, Michael J. Conroy, James E. Hines, H. Frankin Percival
Foods of juvenile ring-necked ducks: Relationship to wetland pH Foods of juvenile ring-necked ducks: Relationship to wetland pH
Foods of 37 juvenile ring-necked ducks (Aythya collaris) from 16 different wetlands were examined in eastcentral Maine in 1983-85. Invertebrates made up 70% aggregate dry weight (100% occurrence) of the foods of Class Ia-IIa (≤ 24 days old) ducklings and 32% (86% occurrence) of Class IIb-III (≥ 25 days old) ducklings. These percentages may be as high as 85% for Ia-IIa ducklings and 47%...
Authors
Daniel G. McAuley, Jerry R. Longcore
Survival of juvenile ring-necked ducks on wetlands of different pH Survival of juvenile ring-necked ducks on wetlands of different pH
Brood and duckling survival of ring-necked ducks (Aythya collaris) was examined in relation to wetland water chemistry in eastcentral Maine during 1983-85. Daily survival rates (DSR) of broods and ducklings were determined for 381 ducklings from 64 broods by counts of each brood at 6-10-day intervals during broodrearing. Twelve of 64 females lost entire broods. Only 176 of 381 (46%)...
Authors
Daniel G. McAuley, Jerry R. Longcore
Hotshots, hotspots, and female preference in the organization of lek mating systems Hotshots, hotspots, and female preference in the organization of lek mating systems
We critically review the female-preference and hotspot models, the two most widely accepted recent explanations of lek organization. On the basis of what we believe are the inadequacies of these models-too great a reliance on the presumed acuity of female discrimination, the assumption that females have full freedom of choice within the lek, and insufficient recognition of the importance...
Authors
B. M. Beehler, Mercedes S. Foster
[Book review] Story of extinct birds told with accuracy, verve: Extinct Birds, by Errol Fuller. Facts on File Publications, 1988 [Book review] Story of extinct birds told with accuracy, verve: Extinct Birds, by Errol Fuller. Facts on File Publications, 1988
No abstract available.
Authors
Matthew C. Perry