Reproductive rate and temporal spacing of nesting of red-winged blackbirds in upland habitat
Richard A. Dolbeer
1976, The Auk (93) 343-355
The literature contains numerous studies on Red-winged Blackbird (Agelaius phoeniceus) reproduction. Francis (1971) summarized eight studies dealing with nesting success. These and other studies have also provided information on breeding chronology, clutch sizes, sex ratios, survival rates for eggs and nestlings, reproductive physiology, and other life history aspects of reproduction....
Lead in tissues of mallard ducks dosed with two types of lead shot
M. T. Finley, M. P. Dieter, L. N. Locke
1976, Bulletin of Environmental Contamination and Toxicology (16) 261-269
Mallard ducks (Anas platyrhynchos) were sacrificed one month after ingesting one number 4 all-lead shot or one number 4 lead-iron shot. Livers, kidneys, blood, wingbones, and eggs were analyzed for lead by atomic absorption. Necropsy of sacrificed ducks failed to reveal any of the tissue lesions usually associated with lead...
The effects of orchard pesticide applications on breeding robins
E.V. Johnson, G.L. Mack, D.Q. Thompson
1976, The Wilson Bulletin (88) 16-35
From 1966 through 1968, robins reproduced successfully in commercial apple orchards which were periodically sprayed with DDT, dieldrin, and other pesticides. Observations by a Z-man team using walkie-talkies revealed that breeding robins obtained essentially all food for themselves and nestlings from unsprayed areas adjacent to the orchards. Invertebrate trapping in...
Methylmercury: Second generation reproductive and behavioral effects of mallard ducks
G. H. Heinz
1976, Journal of Wildlife Management (40) 710-715
Mallard ducks (Anas platyrhynchos) whose parents were fed a diet containing 0.5 ppm mercury (equal to about 0.1 ppm mercury in a natural diet) also were fed a diet containing 0.5 ppm mercury beginning at 9 days of age and continuing through their reproductive season. Mercury in the eggs of...
Aging immature mourning doves by primary feather molt
G.H. Haas, S.R. Amend
1976, Journal of Wildlife Management (40) 575-578
This study was undertaken to document the timing of primary feather molt for aging purposes and to examine variability in rate of molt between years and between sexes of immature wild mourning doves (Zenaida macroura). We used capture records from a 7-year study on the Piedmont and Coastal Plain of...
Delta-aminolevulinic acid dehydratase: Inhibition in ducks dosed with lead shot
M. T. Finley, M. P. Dieter, L. N. Locke
1976, Environmental Research (12) 243-249
Lead concentration in blood and erythrocyte delta-aminolevulinic acid dehydratase (ALAD) activity was measured in mallard ducks dosed with one all-lead shot or one lead-iron combination shot. For 2 weeks after dosage, lead in blood of ducks given an all-lead shot was fourfold higher than in those dosed with lead-iron shot....
Woodcock use of clearcut aspen areas in Wisconsin
J.B. Hale, L.E. Gregg
1976, Wildlife Society Bulletin (4) 111-115
Clearcut areas in northern Wisconsin aspen (Populus spp., mostly P. tremuloides) forests were highly attractive to woodcock (Philohela minor) for feeding and night-roosting, and made excellent sites for woodcock trapping and banding. Woodcock use of clearcuts was extended for several years by annually removing vegetation from trails with a...
White-tailed deer migration and its role in wolf predation
R.L. Hoskinson, L.D. Mech
1976, Journal of Wildlife Management (40) 429-441
Seventeen white-tailed deer (Odocoileus virginianus) were radio-tagged in winter yards and tracked for up to 17 months each (881 locations) from January 1973 through August 1974 in the central Superior National Forest of NE Minnesota following a drastic decline in deer numbers. Ten vyolves (Canis lupus) from 7 packs in...
Organochlorine residues and reproduction in the big brown bat
D. R. Clark Jr., T. G. Lamont
1976, Journal of Wildlife Management (40) 249-254
Twenty-six pregnant big brown bats (Eptesicus fuscus) were collected at Montpelier Barn, Laurel, Maryland, and kept in individual cages until parturition. Seven young in 5 litters were born dead; 21 litters contained only living young. Polychlorinated bipbenyl (PCB, Aroclor 1260) crossed the placenta two to three times more readily than...
Organochlorine residues in three bat species from four localities in Maryland and West Virginia, 1973
D. R. Clark Jr., R. M. Prouty
1976, Pesticides Monitoring Journal (10) 44-53
In 1973, 119 bats of three species were collected from four localities in Maryland and West Virginia. The collection included 43 big brown bats (Eptesicus fuscus), 43 little brown brown bats (Myotis lucifugus), and 33 eastern pipistrelles (Pipistrellus subflavus). The bats were collected from Round Top Mountain, Washington Co., Md.;...
Mathematical models for non-parametric inferences from line transect data
K.P. Burnham, David R. Anderson
1976, Biometrics (32) 325-336
A general mathematical theory of line transects is developed which supplies a framework for nonparametric density estimation based on either right angle or sighting distances. The probability of observing a point given its right angle distance (y) from the line is generalized to an arbitrary function g(y). Given only...
Sublethal effects of chronic lead ingestion in mallard ducks
M. T. Finley, M. P. Dieter, L. N. Locke
1976, Journal of Toxicology and Environmental Health (1) 929-937
Mallard drakes (Anas platyrhynchos) fed 1, 5, or 25 ppm lead nitrate were bled and sacrificed at 3‐wk intervals. No mortality occurred, and the pathologic lesions usually associated with lead poisoning were not found. Changes in hematocrit and hemoglobin concentration did not occur. After 3 wk ducks fed...
Wildlife importation into the United States, 1900-1972
R.C. Banks
1976, Special Scientific Report - Wildlife 200
Data from Bureau of Biological Survey and U.S. Fish and Wildlife Service reports show an overall increase in the number of birds and mammals imported from 1900 to 1972. The trend was interrupted by World War I, the economic depression of the 1930's, and World War II. Data...
Newsletter for the Accelerated Research Program for migratory shore and upland game birds
R.A. Coon
1976, Newsletter for the Accelerated Research Program for migratory shore and upland game birds [No. 1].
Distribution and abundance of aquatic vegetation in the upper Chesapeake Bay, 1971-1974
J.A. Kerwin, R. E. Munro, W.W.A. Peterson
1976, Book chapter, The Effects of Tropical Storm Agnes on the Chesapeake Bay Estuarine System
Mortality in captive sandhill cranes at the Patuxent Wildlife Research Center, 1966-1975
J. W. Carpenter, L. N. Locke, J.C. Miller
James C. Lewis, editor(s)
1976, Book chapter, Proceedings of the International Crane Workshop
Trace-metal variation in soils and sagebrush in the Powder River Basin, Wyoming and Montana
Jon J. Connor, John R. Keith, Barbara M. Anderson
1976, Journal of Research of the U.S. Geological Survey (4) 49-59
A reconnaissance study of 28 trace metals in samples of surface soil (0-2.5 cm deep), subsurface soil (15-20 cm deep), and big sagebrush (Artemisia tridentata) that were collected from the Powder River Basin in Wyoming and Montana indicates that little variation occurs in nature at scales greater than about 35...
Age and tectonic significance of volcanic rocks on St. Matthew Island, Bering Sea, Alaska
William W. Patton Jr., Marvin A. Lanphere, Thomas P. Miller, Richard A. Scott
1976, Journal of Research of the U.S. Geological Survey (4) 67-73
Reconnaissance investigations of the heretofore little known volcanic assemblage on St Matthew Island provide significant information on the tectonic history of the Bering Sea shelf. St. Matthew Island is made up of approximately 500 m of subaerial calc-alkaline volcanic rocks ranging in composition from high-alumina basalt to rhyolite. Four K-Ar...
Behavior of trace elements during magmatic processes - A summary of theoretical models and their applications
Joseph G. Arth
1976, Journal of Research of the U.S. Geological Survey (4) 41-47
Progress in understanding the behavior of trace elements during the processes that produce igneous rocks has been made possible by the parallel development of theoretical models to describe that behavior and analytical techniques that permit precise measurement of trace-element concentrations in igneous rocks and minerals. The result of this progress...
Age and origin of the Darrough Felsite, southern Toiyabe Range, Nevada
R. C. Speed, E.H. McKee
1976, Journal of Research of the U.S. Geological Survey (4) 75-81
The name Darrough Felsite was originally assigned to a body of fine-grained quartzofeldspathic igneous rock probably greater than 3 km thick that is exposed continuously over 100 km2 in the southern Toiyabe Range of central Nevada. The Darrough was supposed to consist mostly of intrusive rocks of probable Permian age....
Petrology of the Paloma Valley ring complex, southern California batholith
D. M. Morton, A.M. Bard
1976, Journal of Research of the U.S. Geological Survey (4) 83-89
The Paloma Valley ring complex is one of the numerous plutons that make up the Cretaceous southern California batholith. The complex is composite, consisting of (1) an older, single ring dike and two subsidiary short-arced inner dikes, and (2) a younger set of thin short-arced dikes largely inside the older...
Land subsidence and aquifer-system compaction in the San Jacinto Valley, Riverside County, California - A progress report
Ben Elder Lofgren
1976, Journal of Research of the U.S. Geological Survey (4) 9-18
Widespread subsidence continues in the San Jacinto structural trough as water levels continue to decline. Subsidence is due principally to the compaction of water-bearing deposits as effective stresses are increased by artesian-head decline. Other possible contributory causes of subsidence are (1) local or regional tectonic adjustments and graben downfaulting, (2)...
Method and importance of obtaining humic and fulvic acids of high purity
Ronald L. Malcolm
1976, Journal of Research of the U.S. Geological Survey (4) 37-40
A detailed procedure incorporating centrifugation, pressure filtration, dialysis, resin exchange, and freeze drying is given for the extraction and purification of fulvic and humic acids from soils and sediments. By use of the procedure humic acids have been prepared which have less than 0.22 percent ash. The isolation of relatively...
Stratigraphic and hydrologic relationship of the Piney Point aquifer and the Alloway Clay Member of the Kirkwood Formation in New Jersey
Bronius Nemickas, Louis D. Carswell
1976, Journal of Research of the U.S. Geological Survey (4) 1-7
Coarse quartzose (clastic) sediments of middle and late Eocene age in the subsurface of southern New Jersey are identified in this report as the Piney Point aquifer. The sediments are as thick as 220 feet (67 metres) and form a freshwater aquifer which is laterally continuous with the Piney Point...
Bootstrap window, Elko and Eureka Counties, Nevada
James G. Evans, Thomas E. Mullens
1976, Journal of Research of the U.S. Geological Survey (4) 119-125
The Bootstrap window in the Roberts Mountains thrust of north-central Nevada contains a 1,500-ft (460-m)- thick autochthonous section of carbonate assemblage rocks. These carbonate rocks include the upper part of the Roberts Mountains Formation and an unnamed limestone of Devonian age. They contain abundant material that must have been deposited...
