Tolerance of adult mallards to subacute ingestion of crude petroleum oil
Barnett A. Rattner
1981, Toxicology Letters (8) 337-342
Adult male mallards were fed untreated mash or mash containing 1.5% Prudhoe Bay crude oil for 7 days ad lib. During the initial 24 h of exposure to crude petroleum oil, ducks consumed less mash (P less than 0.05) and lost approx. 3.5% of their initial body weight (P less...
Twenty-five year trends in diving duck populations in Chesapeake Bay
Matthew C. Perry, R. E. Munro, G.M. Haramis
1981, Transactions of the North American Wildlife and Natural Resources Conference (46) 299-310
Parental development of Eimerian coccidia in sandhill and whooping cranes
M.N. Novilla, J. W. Carpenter, T.R. Spraker, T.K. Jeffers
1981, Journal of Protozoology (28) 248-255
In contrast with isosporoid species of coccidia that have established extraintestinal phases of development, the eimeriids, except for a few species, generally have been considered inhabitants of the intestinal tract. Eimeria infection in sandhill cranes (Grus canadensis) and whooping cranes (G. americana) may result in disseminated visceral coccidiosis. Nodules were observed in...
Plasma corticosterone and thyroxine concentrations during chronic ingestion of crude oil in mallard ducks (Anas platyrhynchos)
Barnett A. Rattner, W. C. Eastin Jr.
1981, Comparative Biochemistry and Physiology, Part C: Comparative Pharmacology (68) 103-107
1. Blood samples were collected from mallard ducks after 6, 12, and 18 weeks of dietary exposure to mash containing 0.015%, 0.150%, and 1.500% crude oil.2. Plasma corticosterone concentrations in ducks fed mash containing 0.150% or 1.500% Alaskan Prudhoe Bay crude oil were uniformly depressed when compared to values in...
The structure of western warbler assemblages: Analysis of foraging behavior and habitat selection in Oregon
Michael L. Morrison
1981, The Auk (98) 578-588
This study examines the foraging behavior and habitat selection of a MacGillivray's (Oporornis tolmiei)-Orange-crowned (Vermivora celata)-Wilson's (Wilsonia pusilla) warbler assemblage that occurred on early-growth clearcuts in western Oregon during breeding. Sites were divided into two groups based on the presence or absence of deciduous trees. Density estimates for each species...
Some effects of environmental pollutants on endocrine regulatory mechanisms
W. N. Holmes, J. Gorsline, K.P. Cavanaugh
1981, Advances in Physiological Sciences (33) 1-11
Management of waterfowl during severe weather
R.E. Kirby, Fred Ferrigno
1981, New Jersey Outdoors (8) 14-16
Yellow rail collected in Maryland
E.M. Martin, Matthew C. Perry
1981, Maryland Birdlife (37) 15-16
Thirty-third winter bird-population study. 5. Upland tulip-tree--maple--oak forest
C.S. Robbins
1981, American Birds (35) 23
Elevational record for Euderma maculatum (Chiroptera: Vespertilionidae)
R.P. Reynolds
1981, Southwestern Naturalist (26) 91-92
Chesapeake Bay most important wintering area for canvasback duck
Matthew C. Perry
1981, Audubon Naturalist News (7) 9
Forty-fourth breeding bird census. 10. Upland tulip-tree--maple--oak forest
C.S. Robbins
1981, American Birds (35) 52
The view from Ventura
J.C. Ogden, N.F.R. Snyder
1981, Point Reyes Bird Observatory Newsletter (53) 11-15
Breeding habit of the toad Bufo coccifer in Costa Rica, with a description of the tadpole
R.W. McDiarmid, M.S. Foster
1981, Southwestern Naturalist (26) 353-363
The breeding habits of Bufo coccifer were studied in northwestern Costa Rica between 1971 and 1974. This species breeds during the rainy season, at least from May through August. Males chorus from areas of shallow water. Their calls resemble those of Mexican representatives of the species in pulse rate and...
Effects of lead shot ingestion on delta-aminolevulinic acid dehydratase activity, hemoglobin concentration, and serum chemistry in bald eagles
D. J. Hoffman, O. H. Pattee, Stanley N. Wiemeyer, B. Mulhern
1981, Journal of Wildlife Diseases (17) 423-431
Lead shot ingestion by bald eagles (Haliaeetus leucocephalus) is considered to be widespread and has been implicated in the death of eagles in nature. It was recently demonstrated under experimental conditions that ingestion of as few as 10 lead shot resulted in death...
The Mayfield method of estimating nesting success: A model, estimators and simulation results
Gary L. Hensler, J.D. Nichols
1981, The Wilson Bulletin (93) 42-53
Using a nesting model proposed by Mayfield we show that the estimator he proposes is a maximum likelihood estimator (m.l.e.). M.l.e. theory allows us to calculate the asymptotic distribution of this estimator, and we propose an estimator of the asymptotic variance. Using these estimators we give approximate confidence...
Coccidia of Aleutian Canada geese
E.C. Greiner, Donald J. Forrester, J. W. Carpenter, D.R. Yparraguirre
1981, Journal of Wildlife Diseases (17) 365-370
Fecal samples from 122 captive and 130 free-ranging Aleutian Canada geese (Branta canadensis leucopareia) were examined for oocysts of coccidia. Free-ranging geese sampled on the spring staging ground near Crescent City, California were infected with Eimeria hermani, E. truncata, E. magnalabia, E. fulva, E. clarkei and Tyzzeria parvula. Except for E....
An evaluation of blood plasma for monitoring DDE in birds of prey
Charles J. Henny, D. L. Meeker
1981, Environmental Pollution (Series A) (25) 291-304
Laboratory and field studies show that DDE residues in blood plasma are highly correlated with DDE in the brain, the rate of DDE exposure and the amount of DDE in eggs of free-living birds of prey. A blood sampling approach is proposed to supplement existing environmental contaminant methods available for...
Growth of mallards fed phosphamidon for 13-day periods during three different developmental stages
S. Haseltine, Gary L. Hensler
1981, Environmental Pollution (Series A) (25) 139-147
Mallard ducklings (Anas platyrhynchos) were exposed to a 13-day dietary treatment of 0, 0·5 or 5·0 ppm phosphamidon at one of three successive age intervals (5–17 days, 18–30 days, or 31–43 days) during a 10-week growth period. Weekly measurements of body weight, wing length, primary feather length, and bill length...
Avoidance behavior of young black ducks treated with chromium
G. H. Heinz, S. D. Haseltine
1981, Toxicology Letters (8) 307-310
Pairs of adult black ducks (Anas rubripes) were fed a diet containing 0, 20, or 200 ppm chromium in the form of chromium potassium sulfate. Ducklings from these pairs were fed the same diets as adults and were tested for their avoidance responses to a fright stimulus. Neither...
The effects of ingested petroleum on the maphthalene-metabolizing properties of the liver tissue in seawater-adapted mallard ducks (Anas platyrhynchos)
J. Gorsline, W. N. Holmes, J. Cronshaw
1981, Environmental Research (24) 377-390
Hepatic mixed function oxidase activities were estimated in seawater-adapted mallard ducks (Anas platyrhynchos) that had been consuming food contaminated with one of five different types of crude oil. After 50 days of exposure to contaminated food, enzyme activities of liver microsomal preparations were assessed in terms of their naphthalenemetabolizing properties...
Brain cholinesterase (ChE) activity in nestling starlings: Implications for monitoring exposure of nestling songbirds to ChE inhibitors
C.E. Grue, G.V.N. Powell, N.L. Gladson
1981, Bulletin of Environmental Contamination and Toxicology (26) 544-547
No abstract available....
Residues of persistent pesticides decreasing
J.B. Graves, G.U. Mayfield, J.D. Newsom
1981, Louisiana Agriculture (25) 8-9
Artificial burrows provide new insight into burrowing owl nesting biology
Charles J. Henny, L. J. Blus
1981, Raptor Research (15) 82-85
Low DDT residues in plasma of bald eagles (Haliaeetus leucocephalus) wintering in Colorado and Missouri
Charles J. Henny, C.R. Griffin, D.W. Stahlecker, A.R. Harmata, E. Cromartie
1981, Canadian Field-Naturalist (95) 249-252
No abstract available. ...
