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
Weather and pheasant populations in southwestern North Dakota Weather and pheasant populations in southwestern North Dakota
High productivity and survival of ring-necked pheasants (Phasianus colchicus) were correlated with high rainfall and cool temperatures in May and June during an 8-year period in southwestern North Dakota. These findings differed markedly from those of several earlier studies in the less arid midwestern United States where cool, wet weather in the spring generally affected pheasant...
Authors
R. K. Martinson, C.R. Grondahl
Fall food habits of wood ducks from Lake Marion, South Carolina Fall food habits of wood ducks from Lake Marion, South Carolina
A total of 108 stomachs of wood ducks (Aix sponsa) collected from hunters on the upper end of Lake Marion, South Carolina, between November 29 and December 6, 1961, were examined for information on food habits. Six plants made up over 98 percent of the total volume. Five were tree fruits: water and pin oak (Quercus nigra and Q. palustris), baldcypress (Taxodium distichum), sweetgum...
Authors
Frank B. McGilvrey
Fall food habits of ducks near Santee Refuge, South Carolina Fall food habits of ducks near Santee Refuge, South Carolina
During the 1961 waterfowl hunting season, 360 stomachs of 10 duck species were collected from hunters near the Santee National Wildlife Refuge, Lake Marion, South Carolina. Based on percentage of total volume, 20 of the most important foods are listed. The six most important duck species in the kill were: mallard (Anas platyrhynchos), wood duck (Aix sponsa), widgeon (Mareca americam)...
Authors
Frank B. McGilvrey
Nesting of hooded mergansers of the Patuxent Wildlife Research Center, Laurel, Maryland Nesting of hooded mergansers of the Patuxent Wildlife Research Center, Laurel, Maryland
The first known record of Hooded Mergansers (Lophodytes cucullatus) nesting on the coastal plain of Maryland was in 1961, when Mr. Francis Uhler (pers. comm) found two clutches in Wood Duck nest boxes in impoundments at the Patuxent Wildlife Research Center, about five miles southeast of Laurel, Maryland. R.E. Stewart and C.S. Robbins (“Birds of Maryland and the District of Columbia,” N...
Authors
Frank B. McGilvrey
Maryland nest summary for 1965 and 10-year recapitulation Maryland nest summary for 1965 and 10-year recapitulation
No abstract available.
Authors
W.T. Van Velzen
The life of an eagle. [Book review] The Last Eagle, by D. Mannix The life of an eagle. [Book review] The Last Eagle, by D. Mannix
No abstract available.
Authors
F. C. Schmid
Birds and Aircraft on Midway Islands, 1959-63 Investigations Birds and Aircraft on Midway Islands, 1959-63 Investigations
At Midway Naval Station, 1.100 miles west-northwest of Honolulu, military aircraft collide with flying albatrosses at the rate of about 300 to 400 per year. One aircraft out of every five that hits an albatross on takeoff either aborts (stops before it is airborne), or dumps fuel and returns for appraisal of damage. About 70,000 pairs of Laysan albatrosses and 7,000 pairs of blackfooted
Authors
C.S. Robbins
The status of the osprey in Cape May County, New Jersey, between 1939 and 1963 The status of the osprey in Cape May County, New Jersey, between 1939 and 1963
Comparison is made of the population of ospreys in Cape May County, N.J., in the late 1930's with that in 1963, and with a population of these birds at Tilghman Island, Maryland. Production of young per nest in the 1930's compares favorably with the production of young in the populations examined in 1963. It is suggested, based on historical evidence, that a decline in the numbers of...
Authors
F. C. Schmid
New Federal research station New Federal research station
No abstract available.
Authors
R.C. Erickson
Spermatogenesis in bald eagles experimentally fed a diet containing DDT Spermatogenesis in bald eagles experimentally fed a diet containing DDT
When Bald Eagles were fed DDT in the diet at the level of 10 ppm (dry weight basis) for periods of 60 and 120 days, there was no interference with spermatogenic activity. Degenerative testicular changes were produced only by levels of DDT that produced abnormal neurological signs and usually resulted in death. Histological examination of these testes indicates that Bald Eagles have a...
Authors
L. N. Locke, N.J. Chura, P.A. Stewart
Thirtieth breeding-bird census: Salt marsh edge habitat (Delaware) Thirtieth breeding-bird census: Salt marsh edge habitat (Delaware)
No abstract available.
Authors
S.T. Brooks, W.J. Wayne, R.L. West, J. T. Linehan
Residues of DDT in brains and bodies of birds that died on dosage and in survivors Residues of DDT in brains and bodies of birds that died on dosage and in survivors
Residues of 1,1,1-trichloro-2,2-bis(p-chlorophenyl)-ethane (DDT) and 1,1-dichloro-2,2-bis(p-chlorophenyl)-ethane (DDD) in brains of cowbirds (Molothrus ater) killed by dietary dosage of DDT were similar in birds that died after various lengths of time on dosage and in birds that died of delayed effects after as much as 40 days on clean food. Residues of DDT and DDD, but not of 1,1...
Authors
L.F. Stickel, W. H. Stickel, R. Christensen