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185162 results.

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Page 6505, results 162601 - 162625

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Chlorinated hydrocarbons and eggshell changes in raptorial and fish-eating birds
J.J. Hickey, D. W. Anderson
1968, Science (162) 271-273
Catastrophic declines of three raptorial species in the United States have been accompanied by decreases in eggshell thickness that began in 1947, have amounted to 19 percent or more, and were identical to phenomena reported in Britain. In 1967, shell thickness in herring gull eggs from five states decreased...
Relative toxicity of lead and five proposed substitute shot types to pen-reared mallards
John W. Grandy, Louis N. Locke, George E. Bagley
1968, Journal of Wildlife Management (32) 483-488
A 30-day toxicity test was made to determine the relative toxicity of lead, a tin-lead alloy, zinc, nickel, teflon-coated steel, and tin, all in shot form, to pen-reared mallard drakes. All of the 15 ducks dosed with lead died. Twenty-seven percent of 15 dosed with alloy, and 20 percent of...
Blood parasites in North American waterfowl
C. M. Herman
1968, Transactions of the North American Wildlife and Natural Resources Conference (33) 348-359
One thing seems to stand out in the overall knowledge we have of the blood parasites of waterfowl, as previously noted by Herman and Wehr, (1954): the greatest potential of losses is in the younger age groups, usually those birds 5-10 weeks old. In Leucocytozoon infections, death occurs as early...
Geology and ground-water resources of Burlington County, New Jersey
F. Eugene Rush
1968, New Jersey Division of Water Policy and Supply Special Report 26
Burlington County, which lies between Trenton, Atlantic City and Camden, has an area of 827 square miles. The county is in the Atlantic Coastal Plain physiographic province, has moderate temperatures and a dependable rainfall of 44 inches per year. The area is attracting new industries and additional population. Water usage...
Bairds's junco
Richard C. Banks
1968, Book chapter, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies
Texas black-throated sparrows
Richard C. Banks
Arthur Cleveland Bent, Oliver L. Austin Jr., editor(s)
1968, Book chapter, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies
Epilogue
C.E. Addy, R. K. Martinson
Philip Barske, editor(s)
1968, Book chapter, Black Duck: Evaluation, Management, and Research!: A Symposium
Home range and travels
L.F. Stickel
John A. King, editor(s)
1968, Book chapter, Biology of Peromyscus (Rodentia)
The concept of home range was expressed by Seton (1909) in the term 'home region,' which Burr (1940, 1943) clarified with a definition of home range and exemplified in a definitive study of Peromyscus in the field. Burt pointed out the ever-changing characteristics of home-range area and the consequent...