C. B. Kepler, J. Jeffrey, J. M. Scott
1979, 'Elepaio (39) 115-116
No abstract available....
Search Results
184769 results.
Alternate formats: RIS file of the first 3000 search results | Download all results as CSV | TSV | Excel | RSS feed based on this search | JSON version of this page of results
Page 5629, results 140701 - 140725
Publication Extents
Not all publications have extents, not all extents are completely accurateMatthew C. Perry
1979, Audubon Naturalist News (5) 8
L.D. Mech
1979, Natural History (88) 70-77
B.R. Noon
1979, American Birds (33) 68
W.B. King, N.F.R. Snyder, M. Segnestam, J. Grantham
1979, American Birds (33) 746-748
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....
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...
D. J. Hoffman, Johnnie N. Moore
1979, Teratology (20) 453-461
The embryotoxic potential of external applications of methyl mercury on mallard eggs was investigated to assess the possible impact of mercury transferred from the plumage of effluent-contaminated aquatic birds to their eggs. Eggs were treated on day 3 of development with microliter applications of methyl mercury that was dissolved with...
D. J. Hoffman
1979, Bulletin of Environmental Contamination and Toxicology (23) 203-206
No abstract available....
P.N. Gerrard, Stanley N. Wiemeyer, J.M. Gerrard
1979, Raptor Research (13) 57-64
T.W. Hoekstra, D.L. Schweitzer, C.T. Cushwa, S.H. Anderson, R.B. Barnes
1979, Transactions of the North American Wildlife and Natural Resources Conference (44) 380-391
G. H. Heinz
1979, Journal of Wildlife Management (43) 394-401
Three generations of mallard ducks (Anas platyrhynchos) were fed either a control diet or a diet containing 0.5 ppm mercury in the form of methylmercury. The levels of mercury in adult tissues and eggs remained about the same over 3 generations. The methylmercury diet had no effect on adult weights...
D. J. Hoffman
1979, Bulletin of Environmental Contamination and Toxicology (22) 632-637
No abstract available....
E. F. Hill
1979, Laboratory Animal Science (29) 349-352
Japanese quail (Coturnix coturnix japonica) were dusted with 5% carbaryl to determine if this topical treatment would alter plasma and brain cholinesterase activities. Within 6 hours after dusting, plasma cholinesterase activity was depressed compared with controls, the depression averaging 20% for females and 27% for males. By 24 hours the...
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, R.W. Johnson
1979, Toxicology (12) 189-196
Endrin is very toxic to birds and has been implicated in the deaths of birds in nature. However, it is not known how rapidly birds eliminate endrin, a factor important in determining how much is accumulated in tissues. In this study, the loss rate of endrin was followed for 64...
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...
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....
C. N. Hillman, J.C. Sharps
1979, Proceedings of the South Dakota Academy of Science (57) 154-162
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...
M.R. Fuller, C.S. Robbins
1979, Newsletter of the Hawk Migration Association of North America (4) 1-3
M.R. Fuller
1979, Newsletter of the Hawk Migration Association of North America (4) 1-2
Charles J. Henny, D. W. Anderson
1979, Bulletin of the Southern California Academy of Sciences (78) 89-106
An estimated 810 ± 55 pairs (minimum estimate) of ospreys (Pandion haliaetus) were nesting in the study area during our survey (24 March-1 April 1977). Approximately 174 pairs nested along the Pacific side of Baja California, 255 pairs along the gulf side, 187 pairs on the Midriff Islands, and 194...
S.H. Anderson
1979, Transactions of the North American Wildlife and Natural Resources Conference (44) 431-445
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...