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
Identification of sex in Boiga irregularis: Implications for population dynamics in Guam Identification of sex in Boiga irregularis: Implications for population dynamics in Guam
No abstract available.
Authors
M.A. Jordan, G.H. Rodda
A brown tree snake (Boiga irregularis) sighting from Texas A brown tree snake (Boiga irregularis) sighting from Texas
No abstract available.
Authors
M. J. McCoid, T. H. Fritts, E.W. Campbell
Distribution and abundance of birds wintering in Maryland, 1988-1993 Distribution and abundance of birds wintering in Maryland, 1988-1993
A winter bird survey was conducted throughout Maryland, primarily by volunteers, during the 6 winters of 1988 to 1993 between the dates of 10 Jan and 10 Feb. The state of Maryland is covered by 1231 blocks (9.5 sq. miles each), each comprising one-sixth of the standard U.S.G.S. 7.5 minute topographic quadrangle, and 548 of these blocks (44.5%) were surveyed for winter birds. Blocks were...
Authors
Jeff S. Hatfield, S.A. Ricciardi, G.A. Gough, D. Bystrak, Sam Droege, C.S. Robbins
Survival and causes of mortality in juvenile Puerto Rican parrots Survival and causes of mortality in juvenile Puerto Rican parrots
Fifteen juvenile Puerto Rican Parrots (Amazona vittata) from wild nests in 1985, 1986 and 1987 were radio monitored an average of 110 +- 15.9 (SE) d (range 4-209 d) post-fledgling. Minimum survival was 67% (n = 3) in 1985, 100% (n = 4) in 1986 and 43% (n = 7) in 1987. Most mortality (three of five deaths) occurred during the first 35 d following fledgling. A major cause of mortality was...
Authors
G.D. Lindsey, W.J. Arendt, Jan Kalina
On the importance of sampling variance to investigations of temporal variation in animal population size On the importance of sampling variance to investigations of temporal variation in animal population size
Our purpose here is to emphasize the need to properly deal with sampling variance when studying population variability and to present a means of doing so. We present an estimator for temporal variance of population size for the general case in which there are both sampling variances and covariances associated with estimates of population size. We illustrate the estimation approach with a...
Authors
W.A. Link, J.D. Nichols
First specimens of sooty shearwater, Newell's shearwater, and white-faced storm-petrel from American Samoa First specimens of sooty shearwater, Newell's shearwater, and white-faced storm-petrel from American Samoa
No abstract available.
Authors
G.S. Grant, P.W. Trail, R. B. Clapp
Methods of age determination of the desert tortoise, Gopherus agassizii Methods of age determination of the desert tortoise, Gopherus agassizii
No abstract available.
Authors
D.J. Germano, T. H. Fritts
[Obituary] Robert Earl Stewart, Sr., 1913-1993 [Obituary] Robert Earl Stewart, Sr., 1913-1993
No abstract available.
Authors
H.K. Nelson, D.L. Trauger
Carbofuran affects wildlife on Virginia corn fields Carbofuran affects wildlife on Virginia corn fields
Forty-four Virginia corn fields on 11 farms were searched for evidence of dead or debilitated wildlife following in-furrow application of granular carbofuran (Furadan 15G) during April and May 1991. Evidence of pesticide poisoned wildlife, including dead animals, debilitated animals, feather spots, and fur spots was found on 33 fields on 10 farms. Carcasses of 61 birds, 4 mammals, and 1...
Authors
E.R. Stinson, L.E. Hayes, P.B. Bush, Donald H. White
Conservation reserve program: benefit for grassland birds in the northern plains Conservation reserve program: benefit for grassland birds in the northern plains
During the past few decades numbers of some species of upland-nesting birds in North America have declined. Duck species such as mallard (Anas platyrhynchos), northern pintail (A. acuta) and blue-winged teal (A. discors) have declined since the early 1970s and have remained low since 1985 (Caithamer et al. 1993). Some grassland-dependent nonwaterfowl species also have declined since 1966...
Authors
R. E. Reynolds, T.L. Shaffer, J.R. Sauer, B.G. Peterjohn
Wildlife radiotelemetry Wildlife radiotelemetry
No abstract available.
Authors
M.D. Samuel, M.R. Fuller
Herbivory on shoalgrass by wintering redheads in Texas Herbivory on shoalgrass by wintering redheads in Texas
An estimated 80% of redheads (Aythya americana) winter on the Laguna Madre of south Texas and Mexico and feed almost exclusively on shoalgrass (Halodule wrightii) rhizomes. Shoalgrass abundance has decreased by 60% over the past 30 years, and because the effects of shoalgrass loss on wintering redheads are unknown, we initiated a study to define habitat selection criteria and document...
Authors
Christine A. Mitchell, Thomas W. Custer, Phillip J. Zwank