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
Forty-fourth breeding bird census. 60. Beech-spruce-hemlock forest Forty-fourth breeding bird census. 60. Beech-spruce-hemlock forest
No abstract available.
Authors
Sam Droege, B.R. Noon
Colony site dynamics and habitat use in Atlantic coast seabirds Colony site dynamics and habitat use in Atlantic coast seabirds
Seabird colony sizes and movements were documented in the DelMarVa coastal region in 1976-1977 and in New Jersey in 1978-1979. Most colonies were found on marsh and dredge deposition islands and on barrier island beaches. For the "traditionally" beach-nesting Herring Gull, Common Tern, and Black Skimmer, larger, more stable colonies were found on barrier beaches than on marsh islands. In...
Authors
R.M. Erwin, J. Galli, J. Burger
Recovery of cholinesterase activity in mallard ducklings administered organophosphorus pesticides Recovery of cholinesterase activity in mallard ducklings administered organophosphorus pesticides
Oral doses of the organophosphorus pesticides acephate, dicrotophos, fensulfothion, fonofos, malathion, and parathion were administered to mallard ducklings (Anas platyrhynchos), and brain and plasma cholinesterase (ChE) activities were determined for up to 77 d after dosing. In vivo recovery of brain ChE activity to within 2 standard deviations of the mean activity of undosed birds...
Authors
W. James Fleming, S.P. Bradbury
DDE residues in young wood ducks (Aix sponsa) near a former DDT manufacturing plant DDE residues in young wood ducks (Aix sponsa) near a former DDT manufacturing plant
Breast muscle DDE residues were as high as 5.8 ppm wet-weight basis and 280 ppm lipid-weight basis in young wood ducks (Aix Sponsa) collected on Wheeler National Wildlife Refuge near a former DDT manufacturing plant in northern Alabama. The average DDE residue in wood ducks collected nearest the plant was 46 times background levels 74 km from the plant.
Authors
W. James Fleming, E. Cromartie
Organochlorine and metal residues in eggs of waterfowl nesting on islands in Lake Michigan off Door County, Wisconsin, 1977-78 Organochlorine and metal residues in eggs of waterfowl nesting on islands in Lake Michigan off Door County, Wisconsin, 1977-78
One egg from each of 114 red-breasted merganser (Mergus serrator) nests in 1977 and 92 nests in 1978 was collected and later analyzed for organochlorines, polybrominated biphenyls (PBBs), polychlorinated styrenes (PCSs). and metals. One egg was also collected from each of the dabbling duck nests located: Twenty-nine of these eggs were analyzed for organochlorines and metals in 1977; 10...
Authors
S. D. Haseltine, G. H. Heinz, W. L. Reichel, John F. Moore
Marking ground targets with radio transmitters dropped from aircraft Marking ground targets with radio transmitters dropped from aircraft
No abstract available.
Authors
T.H. Nicholls, M.E. Ostry, M.R. Fuller
Dynamics, movements, and feeding ecology of a newly protected wolf population in northwestern Minnesota Dynamics, movements, and feeding ecology of a newly protected wolf population in northwestern Minnesota
No abstract available.
Authors
Steven H. Fritts, L. David Mech
The role of observer bias in the North American Breeding Bird Survey The role of observer bias in the North American Breeding Bird Survey
Ornithologists sampling breeding bird populations are subject to a number of biases in bird recognition and identification. Using Breeding Bird Survey data, these biases are examined qualitatively and quantitatively, and their effects on counts are evaluated. Differences in hearing ability and degree of expertise are the major observer biases considered. Other, more subtle influences are...
Authors
C. A. Faanes, D. Bystrak
PCBs and organochlorine pesticides in wild mink and river otters from Oregon PCBs and organochlorine pesticides in wild mink and river otters from Oregon
Mink (Mustela vison) and river otters (Lutra canadensis) collected during the 1978-1979 trapping season in Oregon were analyzed for organochlorine pesticide and polychlorinated biphenyl (PCB) residues. PCB residues were most frequently encountered in both species from the Lower Columbia River. PCB residues in 6 of 9 Columbia River mink livers were as high as those reported in livers of
Authors
Charles J. Henny, L. J. Blus, S.V. Gregory, C. J. Stafford
Reducing bird count variability by training observers Reducing bird count variability by training observers
No abstract available.
Authors
C. B. Kepler, J. M. Scott
Censusing wading bird colonies: An update on the 'flight-line' count method Censusing wading bird colonies: An update on the 'flight-line' count method
1. Thirteen mixed-species heronries (10 in Florida, two in Virginia, one in North Carolina) were studied in 1980 as part of a project begun in 1979 aimed at evaluating the 'flight-line' census method..2. Standardized counts of Snowy and Cattle Egrets, Louisiana and Little Blue Herons flying to and from the nesting colony were made for three hr periods, followed by a nest count of the...
Authors
R.M. Erwin