Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16782
California condor survey, 1978
No abstract available.
Authors
S.R. Wilbur, R.D. Mallette, J.C. Borneman
Nationwide residues of organochlorine compounds in starlings (Sturnus vulgaris), 1976
Organochlorine pesticide and PCB residues in starlings from 126 sites within the contiguous 48 states were monitored during fall 1976. The average nationwide level of DDE and PCBs has increased significantly since 1974, but the number of sites reporting PCB residues has decreased fivefold. Dieldrin residues have remained unchanged since 1974. Highest DDE levels occurred in samples from parts of Ar
Authors
D. H. White
Nationwide residues of organochlorine compounds in wings of adult mallards and black ducks, 1976-77
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 in any flyway and residues remained low. PCB levels decline
Authors
D. H. White
Effects of No. 2 fuel oil on hatchability of marine and estuarine bird eggs
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 oil produce'd 61% mortality in Louisiana heron eggs, 56% in sandwich tern eggs, and 83% in laughing gull eggs.Hatching
Authors
Donald H. White, Kirke A. King, Nancy C. Coon
Relations of wintering canvasbacks to environmental pollutants-Chesapeake Bay, Maryland
No abstract available.
Authors
D. H. White, R.C. Stendell, B. M. Mulhern
Field identification of the Hawaiian creeper on the island of Hawaii
No abstract available.
Authors
J. M. Scott, S. Conant, H.D. Pratt
Sperm head length as a predictor of fecundity in the Sandhill Crane, Grus canadensis
Summary. Semen samples from 14 sandhill cranes were collected for 15 weeks. Mean sperm head length which did not vary significantly over weeks was found to be significantly correlated with fertility (P < 0.04; r = 0.54, n = 14).
Authors
J.S. Sharlin, C.S. Shaffner, G.F. Gee
Status of the everglade kite in Florida--1968-1978
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 at 3 years of age or possibly younger. The population was nomadic; its sex rat
Authors
P.W. Sykes
Observations on distribution, diet, and breeding of the Hawaiian thrush
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 Kona area....Data on food preferences indicate the species subsists chiefly on fruits of native trees, wh
Authors
Charles van Riper, J. Michael Scott