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
Bone layers associated with ecdysis in laboratory-reared Boiga irregularis (Colubridae) Bone layers associated with ecdysis in laboratory-reared Boiga irregularis (Colubridae)
No abstract available.
Authors
E.P. Collins, G.H. Rodda
Can activity traps assess aquatic insect abundance at the landscape level? Can activity traps assess aquatic insect abundance at the landscape level?
We used activity traps as designed by Riley and Bookhout (1990. Wetlands) to sample aquatic invertebrates as part of a study to characterize wetlands on a forested and an agricultural landscape (ca. 1,000 mi'2) in northern. Maine. Eight wetlands (5 from agricultural and 3 from forested landscapes) were sampled at random from 50 wetlands surveyed for waterfowl broods. At the landscape...
Authors
L.R. Boobar, K.E. Gibbs, J. R. Longcore
Habitat constraints on the distribution of passerine residents and neotropical migrants in Latin America Habitat constraints on the distribution of passerine residents and neotropical migrants in Latin America
With continuing tropical deforestation, there is increased concern for birds that depend on forest habitats in Latin America. During the past 10 northern winters, we have conducted quantitative studies of habitat use by wintering migrant songbirds and by residents in the Greater Antilles, Mexico, Central America, and northern South America. Many migrants, but few residents, winter in...
Authors
C.S. Robbins, B.A. Dowell, D.K. Dawson
Habitat use and movements of postfledging American black ducks (Anas rubripes) in the St. Lawrence estuary, Quebec Habitat use and movements of postfledging American black ducks (Anas rubripes) in the St. Lawrence estuary, Quebec
We used radiotelemetry to determine habitat use and movements of 38 female juvenile American black ducks (Anas rubripes) on the north shore of the St. Lawrence estuary, Quebec, from 28 August to 15 November 1991. Ducks separated into three groups based on habitat use: inland, estuarine, and those using a mixture of habitats. Ducks using mixed habitats used the greatest variety of habitat...
Authors
D.A. Clugston, J. R. Longcore, D.G. McAuley, P. Dupuis
Harpy eagle (Harpia harpyja) nesting in manipulated forests Harpy eagle (Harpia harpyja) nesting in manipulated forests
Continental records point to shooting, removal of young and destruction of nests as the primary conservation problems for harpy eagles (Harpia harpyja); bird-observer visits are a new source of concern. Nesting events are roughly 3 yr apart. Nests are used during and after intensive manipulation of the surrounding habitat, and minimum distance between active sites was 3-5 km. In nine...
Authors
E. Alvarez, D. H. Ellis
The effect of flunixin meglumine (Banamine) on the renal function in northern bobwhite (Colinus virginianus): an avian model The effect of flunixin meglumine (Banamine) on the renal function in northern bobwhite (Colinus virginianus): an avian model
No abstract available.
Authors
P. N. Klein, K. Charmatz, J. Langenberg
Identifying sex and age of akiapolaau Identifying sex and age of akiapolaau
Methods for identifying the sex and age of the Akiapolaau (Hemignathus munroi), an endangered honeycreeper found only on the island of Hawaii, were developed by examination and measurement of 73 museum specimens and 24 live birds captured in mist nests. Akiapolaau probably undergo a single annual molt, with most birds molting between February and July. The mottled juvenal plumage is...
Authors
T.K. Pratt, S.G. Fancy, C.K. Harada, G.D. Lindsey, J.D. Jacobi
Population status and trends of grouse and prairie-chickens from the North American Breeding Bird Survey and Christmas Bird Count Population status and trends of grouse and prairie-chickens from the North American Breeding Bird Survey and Christmas Bird Count
No abstract available.
Authors
J.R. Sauer, Sandra Orsillo, B.G. Peterjohn
Lipids and proteins in the Rathke's gland secretions of the North American mud turtle (Kinosternon subrubrum) Lipids and proteins in the Rathke's gland secretions of the North American mud turtle (Kinosternon subrubrum)
Lipids and proteins in the Rathke's gland secretions of the North American mud turtle (Kinosternon subrubrum, Kinosternidae) were analyzed by gas chromatography-mass spectrometry (GC-MS) and SDS-polyacrylamide gel electrophoresis (SDS-PAGE), respectively. Analysis by GC-MS indicates 2,3-dihydroxypropanal and C3–C24 free or esterified fatty acids. Analysis by SDS-PAGE indicates a major...
Authors
W.E. Seifert, S.W. Gotte, T.L. Leto, P.J. Weldon
Bird use of agricultural fields under reduced and conventional tillage in the Texas Panhandle Bird use of agricultural fields under reduced and conventional tillage in the Texas Panhandle
We conducted bird surveys in reduced-tillage and conventional tillage fields in spring, summer, fall, and winter from 1987 to 1991 in the Texas Panhandle. Eastern meadowlarks, longspurs, and savannah sparrows were more common in reduced-tillage (sorghum and wheat stubble) fields than in conventionally tilled (plowed) fields in at least 1 season. Other species also had patterns suggestive...
Authors
Edward L. Flickinger, G.W. Pendleton
Contaminants in eggs of aquatic birds from the grasslands of central California Contaminants in eggs of aquatic birds from the grasslands of central California
Eggs were collected from the Grasslands of western Merced County, California, during 1986 and 1987, and at the Mendota Wildlife Area in Fresno County in 1987, as part of a reproductive study of nesting ducks and shorebirds. The eggs were analyzed to evaluate the effects of contaminants in agricultural drainwater on avian reproduction. Agricultural drainwater was the major source of water...
Authors
R. L. Hothem, D. Welsh