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
Black duck harvest and population dynamics in eastern Canada and the Atlantic Flyway Black duck harvest and population dynamics in eastern Canada and the Atlantic Flyway
No abstract available.
Authors
R. K. Martinson, A. D. Geis, R.I. Smith
Mortality among bobwhites confined to a heptachlor contaminated environment Mortality among bobwhites confined to a heptachlor contaminated environment
The lethal effects of heptachlor on bobwhites (Colinus virginianus) were studied at the Patuxent Wildlife Research Center during 1962 and 1963. A pair of adult birds was placed in each of 32 wire-covered field pens (20 x 50 x 61/2 ft) in May, 1962, and in 36 additional pens in May, 1963. Heptachlor (technical grade on clay granules) was spread in the pens at rates of1/8, 1/4, 1 1/4 and 2...
Authors
J.F. Kreitzer, J. W. Spann
Sensitive resettable odometer aids roadside census of red-winged blackbirds Sensitive resettable odometer aids roadside census of red-winged blackbirds
A sensitive resettable odometer reading to 0.01 mile facilitated censusing breeding male redwinged blackbirds (Agelaius phoeniceus) from a vehicle. Territorial males along roadsides were 'marked' with recorded mileage readings rather than with landmarks of the types employed by Hewitt for censuses based on the Lincoln index principle. Sensitive odometers that can be reset have many...
Authors
D.T. Harke, A.R. Stickley
Structure of the New England herring gull population Structure of the New England herring gull population
Measurements of the rates of population increase, reproduction, and mortality together with an observed age ratio, were used to analyze the population of the Herring Gull in New England. Data from sporadic censuses prior to this study, aerial censuses by the authors, and National Audubon Society Christmas Bird Count indicated that the New England breeding population has been doubling...
Authors
John A. Kadlec, William H. Drury
Distribution of DDT residues in tissues of birds in relation to mortality, body condition, and time Distribution of DDT residues in tissues of birds in relation to mortality, body condition, and time
No abstract available.
Authors
L.F. Stickel, W. H. Stickel
Aerial estimation of the size of gull breeding colonies Aerial estimation of the size of gull breeding colonies
Counts on photographs and visual estimates of the numbers of territorial gulls are usually reliable indicators of the number of gull nests, but single visual estimates are not adequate to measure the number of nests in individual colonies. To properly interpret gull counts requires that several islands with known numbers of nests be photographed to establish the ratio of gulls to nests...
Authors
J.A. Kadlec, W.H. Drury
Possible differentiation of natal areas of North American waterfowl by neutron activation analysis Possible differentiation of natal areas of North American waterfowl by neutron activation analysis
The possibility of using neutron activation analyses to differentiate sources of North American waterfowl was investigated by irradiating rectrices and wing bones of birds collected in several localities, and comparing the characteristic gamma-ray spectra. Canada goose (Branta canadensis) rectrices from Oregon specimens could be distinguished from those taken in Wisconsin and Colorado...
Authors
T. Devine, T.J. Peterle
Rediscovery of Maui nukupuu, Hemignathus lucidus affinis, and sighting of Maui parrotbill, Pseudonestor xanthophrys. Kipahulu Valley, Maui, Hawaii Rediscovery of Maui nukupuu, Hemignathus lucidus affinis, and sighting of Maui parrotbill, Pseudonestor xanthophrys. Kipahulu Valley, Maui, Hawaii
No abstract available.
Authors
W.E. Banko
A comparison of migration between blackbirds and starlings A comparison of migration between blackbirds and starlings
No abstract available.
Authors
Don P. Fankhauser
Bird life of the upper Potomac valley Bird life of the upper Potomac valley
No abstract available.
Authors
C.S. Robbins
Home range and travels Home range and travels
The concept of home range was expressed by Seton (1909) in the term 'home region,' which Burr (1940, 1943) clarified with a definition of home range and exemplified in a definitive study of Peromyscus in the field. Burt pointed out the ever-changing characteristics of home-range area and the consequent absence of boundaries in the usual sense--a finding verified by investigators...
Authors
L.F. Stickel