Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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 5627, results 140651 - 140675

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Diet-related die-off of captive black-crowned night herons
J. W. Carpenter, J. W. Spann, M.N. Novilla
1979, American Association of Zoo Veterinarians, Annual Proceedings (1979) 51-55
Several species of herons, which are top-level consumers in aquatic food chains, have experienced population declines in certain areas o f their normal range (7,13) -- areas in which elevated levels of various environmental pollutants are known to occur. (6) To determine the effects of environmental contaminants on the Ardeidae,...
Population ecology of house mice in unstable habitats
L.F. Stickel
1979, Journal of Animal Ecology (48) 871-887
(1) The relationships between habitat change and house mouse populations were studied by monthly live trapping in a corn-wheat-hay rotation on a small Maryland farm. (2) Population density reached 53.0/ha in a wheat/hay field in October and 25.4/ha in corn in September. Populations increased by immigration as wheat or corn...
Observations on distribution, diet, and breeding of the Hawaiian thrush
Charles van Riper III, J. Michael Scott
1979, The Condor (81) 65-71
Distribution, breeding habits, and diet of the Hawaiian Thrush were recorded over seven years on the island of Hawaii. The range has been much reduced, with the result that today the species occupies approximately 30% of its former range, no longer being found in the Kohala Mountains or in the...
Status of the everglade kite in Florida--1968-1978
P.W. Sykes Jr.
1979, The Wilson Bulletin (91) 495-511
The population status of the Everglade Kite (Rostrhamus sociabils plumbeus) was studied in Florida from 1968 through 1978. Sixty-four nestlings (40% of known fledged young) were leg-banded with unique color combinations, and of these, 17.2% were seen 1 or more years after they were banded. Kites were capable of breeding...
Nationwide residues of organochlorine compounds in wings of adult mallards and black ducks, 1976-77
Donald H. White
1979, Pesticides Monitoring Journal (13) 12-16
Organochlorine residues in wings of adult mallards and black ducks were monitored nationwide during the 1976-77 hunting season. DDE was found in all samples. Levels were unchanged since the 1972-73 collections in all migratory routes except the Pacific Flyway, in which residue levels declined significantly. Dieldrin levels had not changed...
Effects of No. 2 fuel oil on hatchability of marine and estuarine bird eggs
Donald H. White, Kirke A. King, Nancy C. Coon
1979, Bulletin of Environmental Contamination and Toxicology (21) 7-10
Eggs of Louisiana herons, sandwich terns, and laughing gulls were oiled with either 0, 5, or 20 μl of No. 2 fuel oil in the field and in the laboratory. After 5 days of natural incubation, field-oiled and control eggs were opened and embryonic mortality was determined. No. 2 fuel...
The light-footed clapper rail: An update
Cynthia A. Wilburn, Paul D. Jorgensen, Barbara W. Massey, Venita A. Basham
1979, American Birds (33) 251-215
A preliminary report on the Light-footed Clapper Rail, Rallus longirostris levipes, estimated a population of 500-750 birds in California (Wilbur, Am. Birds 28:868-870, 1974). Since then, additional work has been accomplished, most notably: (1) an intensive study of Carpinteria Marsh, Santa Barbara County, 1976-1977 (Basham); (2) a series of winter...