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184914 results.

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Transcontinental mourning dove recovery
Brian Sharp
1971, The Auk (88) 924-924
A Mourning Dove (Zenaida macroura) banded in New York has been reported shot in California. On 25 August 1969, near Palmyra (43°00' N, 77°10' W), New York Department of Environmental Conservation personnel placed U. S. Fish & Wildlife Service band 883-97279 on the leg of a hatching-year Mourning Dove of...
Semiquantitative determination of polychlorinated biphenyls in tissue samples by thin layer chromatography
B.M. Mulhern, E. Cromartie, W. L. Reichel, A. A. Belisle
1971, Journal of the Association of Official Analytical Chemists (54) 548-550
A method is described for the analysis of polychlorinated biphenyl (PCB) compounds in tissue samples. Cleanup by hexane-acetonitrile partitioning and Florisil column chromatography are performed on samples before oxidative treatment to convert DDE to DCBP. PCB components are then determined semi-quantitatively by TLC. No prior separation of PCB from chlorinated...
DDE thins eggshells and lowers reproductive success of captive black ducks
J. R. Longcore, F. B. Samson, T.W. Whittendale Jr.
1971, Bulletin of Environmental Contamination and Toxicology (6) 485-490
Eggs of captive black ducks fed diets containing DDE at 10 and 30 ppm (dry weight) experienced significant shell thinning and an increase in shell cracking when compared to eggs of untreated black ducks. Eggshells from dosed ducks were: 18-24 percent thinner at the equator than shells from undosed...
Organochlorine pesticide residues in woodcock, soils and earthworms in Louisiana, 1965
M. Anne Ross McLane, L.F. Stickel, J.D. Newsom
1971, Pesticides Monitoring Journal (5) 248-250
Woodcock (Philohela minor), earthworms, and soil samples were collected from January-March 1965, from fields in southeastern Louisiana approximately 3 years after discontinuance of areal treatments with heptachlor in this region. Heptachlor epoxide residues in woodcock averaged 0.42 ppm (dry weight), conspicuously lower than in 1961 and 1962. Residues...
Population ecology of the great blue heron with special reference to western Oregon
Charles J. Henny, M.R. Bethers
1971, Canadian Field-Naturalist (85) 205-209
Great Blue Heron (Ardea herodias) begin nesting in western Oregon about 1 month earlier than reported from the Philadelphia region and about 2 months earlier than reported from Southern Alberta. The number of young fledged per nesting pair in Oregon was 2.04 in 1970 which was nearly identical to the...
Hawk migration over White Marsh, Maryland
C.D. Hackman, Charles J. Henny
1971, Chesapeake Science (12) 137-141
The average number of hawks observed per hour in autumn migration between 1951-1954 and 1958-1961 at White Marsh, Maryland, was compared. The counts indicated that the status of the ten species observed may be divided into three categories: (1) relatively stable species (red-tailed hawk), (2) declining species (sparrow hawk, red-shouldered...