C.S. Robbins
1979, American Birds (33) 22-23
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Page 5030, results 125726 - 125750
Publication Extents
Not all publications have extents, not all extents are completely accurateR.J. Rothman, L.D. Mech
1979, Animal Behaviour (27) 750-760
Scent-marking was studied in wolves (Canis lupus) along 133 km of tracks in northern Minnesota during winters of 1975 to 1976 and 1976 to 1977 and in two captive packs and four captive pairs for various periods. Lone wolves, which possess neither mates nor territories, rarely marked by raised-leg...
C.S. Robbins
1979, American Birds (33) 113-114
Kenneth J. Reinecke
1979, The Auk (96) 737-745
Data from 41 juvenile Black Ducks (Anas rubripes) collected in the Penobscot River valley of Maine from June through August 1974-76 were used to estimate the proportion of aquatic invertebrates in the prefledging diet and the allometric growth rates of the tarsi, flight muscles, and alimentary system. The proportion of...
Elizabeth P. Mallory, Davod C. Schneider
1979, The Wilson Bulletin (91) 271-278
In this paper we describe an instance of unusual, agonistic behavior in a flock of migrant Short-billed Dowitchers (Limnodromus griseus) . We compare this behavior to that of other flocks feeding at the same time at other locations in the same estuary and then present evidence suggesting that this behavior...
H. M. Ohlendorf, J. B. Elder, Rey C. Stendell, Gary L. Hensler, R.W. Johnson
1979, Pesticides Monitoring Journal (13) 115-119
Chicks of great blue herons (Ardea herodias) from four heronaries located near South St. Paul, Royalton, and Wabasha, Minnesota, and La Crosse, Wisconsin, were analyzed for organochlorines, Highest mean wet-weight concentrations, 6.43 ppm PCBs. 1.31 ppm DDE, and 1.90 ppm sigma DDT, were found in the South St. Paul chicks....
L.F. Kiff, David B. Peakall, S.R. Wilbur
1979, Condor (81) 166-172
No abstract available....
C. B. Kepler, J. Jeffrey, J. M. Scott
1979, 'Elepaio (39) 115-116
No abstract available....
F.H. Harrington, L.D. Mech
1979, Behaviour (68) 207-249
An experimental study of the role of howling in wolf territory maintenance was conducted in the Superior National Forest, Minnesota. Vocal replies and behaviour of radio-collared wolves in response to human howls were analyzed for eight packs and 10 lone wolves during a 2-year period. Reply rate varied significantly throughout...
Charles J. Henny, T. E. Kaiser
1979, Murrelet (60) 2-5
Many raptorial species in the Pacific Northwest have not been studied from the viewpoint of pollutant contamination. The Swainson's Hawk (Buteo swainsoni) is particularly interesting because of its highly migratory characteristic; it apparently winters primarily in Argentina (Brown and Amadon 1968, Houston 1968). White and Cade (1977) and others...
G. H. Heinz
1979, Journal of Environmental Pathology and Toxicology (3) 379-386
The accumulation of mercury was compared in game-farm and wild-strain mallard ducks fed a diet containing 0.5 ppm mercury in the form of methylmercury dicyandiamide. There were no significant differences between the two strains in levels of mercury that accumulated in blood, kidney, liver, breast muscle, brain, eggs, or ducklings....
Charles J. Henny, Laurel F. VanCamp
1979, The Auk (96) 795-796
The annual weight cycle of wild birds of prey has received little attention in the past, primarily because of the difficulty in capturing and recapturing them. Screech Owls (Otus asio) are resident in our northern Ohio study area and readily occupy nest boxes established for Wood Ducks (Aix sponsa) (see...
L. J. Blus, E. Cromartie, L. McNease, T. Joanen
1979, Bulletin of Environmental Contamination and Toxicology (22) 128-135
No abstract available....
Nancy C. Coon, Peter H. Albers, Robert C. Szaro
1979, Bulletin of Environmental Contamination and Toxicology (21) 152-156
The great black-backed gull (Larus marinus) is widespread in the northern hemisphere, breeding south to Britain and Ireland on the European side of the Atlantic and to Long Island in the United States where populations have increased markedly during the last 50 years (DRURY 1979). With growing exploitation of oil...
J. W. Carpenter, T.R. Spraker, C.H. Gardiner, M.N. Novilla
1979, Journal of the American Veterinary Medical Association (175) 948-951
Oral granulomas were observed in 31 (33%) of 95 captive sandhill cranes (Grus canadensis) at the Patuxent Wildlife Research Center. Necropsy of six of the afflicted cranes revealed granulomatous nodules throughout many of their organ systems. Intracellular protozoan organisms morphologically resembling schizogonic stages were observed within the granulomas by light...
D. R. Clark Jr.
1979, Environmental Science & Technology (13) 338-341
No abstract available....
L. J. Blus, R. M. Prouty
1979, The Wilson Bulletin (91) 62-71
Least Tern nesting colonies on the Cape Romain National Wildlife Refuge and surrounding areas in South Carolina were studied from 1971 through 1975. We located 10 colonies including 6 on the Refuge and 4 on nearby coastal islands. The number of nests in each colony ranged from several up to...
R. Michael Erwin, John C. Ogden
1979, Conference Paper, Proceedings of the 1979 conference of the colonial waterbird group
The temporal patterns of feeding, resting, and reproductive behavior in colonial wading birds have been studied by a number of investigators (Recher and Recher 1972, King 1974, Capen 1978, Custer and Osborn 1978, Kushlan 1978) both on a short-term (daily) and long-term (annual) basis. In coastal marine environments, activities...
Vivian M. Mendenhall, Richard M. Prouty
1979, Conference Paper, Proceedings of the 1978 conference of the colonial waterbird group
Breeding populations of the brown pelican (Pelecanus occidentalis) declined during the 1960's on both east and west coasts of the United States. In 1969, colonies in South Carolina fledged an average of 0.78 young per nest (Blus et al. 1974b), and those in California only 0.004 (Anderson et al....
R. H. Hudson, M. A. Haegele, R. K. Tucker
1979, Toxicology and Applied Pharmacology (47) 451-460
Acute oral (po) and 24-hr percutaneous (perc) LD50 values for 21 common pesticides (19 anticholinesterases, of which 18 were organophosphates, and one was a carbamate; one was an organochlorine central nervous system stimulant; and one was an organonitrogen pneumotoxicant) were determined in mallards (Anas platyrhynchos). Three of the pesticides tested...
U.S. Seal, E.D. Plotka, J.M. Packard, L.D. Mech
1979, Biology of Reproduction (21) 1057-1066
The estrous cycle of 10 intact female wolves, aged 8 months-8 years at the initiation of the study, was characterized in terms of vaginal smears, behavioral observations and serum concentrations of estradiol-17β, progesterone and luteinizing hormone (LH) from January through June. No estrous cycles occurred in these animals between...
D. J. Hoffman
1979, Journal of Toxicology and Environmental Health (5) 835-844
Egg surface applications of microliter quantities of crude and refined oils of high aromatic content are embryotoxic to mallards (Anas platyrhynchos) and other avian species; applications of aliphatic hydrocarbons have virtually no effect. Mallard eggs at 72 h of development were exposed to a mixture of aromatic hydrocarbons or to...
David M. Carneggie, Donald O. Ohlen
1979, Report
This bibliography contains 39 citations of technical papers and other publications dealing with the applications of remote sensing techniques for analyzing and monitoring surface mining. These references summarize recent developments in methods used to identify, map, analyze, and monitor surface mining, particularly coal surface mining....
R.A. Coon
1979, Newsletter for the Accelerated Research Program for migratory shore and upland game birds No. 4.
M.L. Richmond, Charles J. Henny, R.L. Floyd, R.W. Mannan, D.M. Finch, L.R. DeWeese
1979, Research Paper PSW-148
The possible harmful effect of insecticides on nontarget organisms should be a prominent concern in all attempts to control forest pests. Although all wildlife must be considered, birds are particularly vulnerable. The study reported here was part of the effort to find an environmentally safe method to control one of...