Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16783
Eastward migration of blue-winged teal
Of 3,789 recoveries of blue-winged teal (Anas discors) banded prior to the hunting season in the prairie pothole region, 183 (4.8 percent) were recovered, due east in New England, Ontario, Quebec, and the Maritime Provinces during the subsequent hunting season. Of 19 recoveries looked at in detail, all were banded as either hatching-year (flying young) or local (flightless young) birds. A blue-w
Authors
B. Sharp
The seventy-second Christmas bird count. 319. Little Creek, Va
No abstract available.
Authors
P. Sykes
Accidental mortality of diving ducks at St. Marys College, St. Marys, Maryland
No abstract available.
Authors
L. N. Locke
Normal yeast flora of the upper digestive tract of some wild columbids
Seven species of pigeons and doves were cultured for yeasts in the upper digestive tract. The following list gives the isolation rate for each columbid species and the yeasts cultured from them: feral pigeon Columba Livia (Gmelin) 95% -Candida albicans (Robin) Berkhout, C. tropicalis (Castellani) Berkhout, C. krusei (Cast.) Berkhout, C. guilliermondii (Cast.) Langeron et Guerra, Torulopsis glabrat
Authors
R. M. Kocan, H.F. Hasenclever
25th winter bird-population study. 9. Upland tulip-tree--maple--oak forest
No abstract available.
Authors
C.S. Robbins
The seventy-second Christmas bird count. 307. Back Bay National Wildlife Refuge, Va
No abstract available.
Authors
P. Sykes
Ethyl mercury p-toulene sulfonanilide: Lethal and reproductive effects on pheasants
In summary, as little as 30 parts of ethyl mercury p-toluene sulfonanilide per million (12.5 ppm of Hg) in the diet of adult pheasants was generally fatal within 2 to 3 months of feeding. Ten parts of the compound per million (4.2 ppm of Hg) in the diet reduced egg production 50 to 80 percent and increased embryo mortality in the few eggs laid. Mercury residues in 14 eggs were 0.9 to 3.1 ppm, co
Authors
J. W. Spann, R.G. Heath, J.F. Kreitzer, L. N. Locke
Avian cholera in cedar waxwings in Ohio
Avian cholera (Pasteurella multocida infection) was responsible for a localized die-off of cedar waxwings (Bombycilla cedrorum) at Steubenville, Ohio in late June, 1968.
Authors
L. N. Locke, R.C. Banks
The effect of embryonic development on the thickness of the eggshells of the coturnix quail
The average thickness of the shells from 75 unincubated coturnix quail eggs was found to be 0.193 mm. This was 7.3 percent greater than the average thickness (0.179 mm.) of the shells from 60 fully incubated eggs from the same hens. The two sets of eggs were collected simultaneously. This thickness difference was statistically significant (t-test:p< 0.005).
Authors
J.F. Kreitzer