Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16785
Effects of Kelthane® on reproduction of captive eastern screech-owls
Eastern screech-owls (Otus asio) were fed diets containing 10 ppm Kelthane® with 3.4% DDT-related contaminants (old technical formulation), 10 ppm Kelthane with no detectable DDT contaminants (new technical formulation) or a control diet. Food consumption, adult weight and date of initiation of egg laying were similar for birds in control and dosed treatment groups. Most measures of reproductive s
Authors
Stanley N. Wiemeyer, J. W. Spann, C. M. Bunck, A. J. Krynitsky
Generalized procedures for testing hypotheses about survival or recovery rates
Comparisons of survival or recovery rates from different time periods or geographic regions may be difficult to accomplish using the Z-tests suggested by Brownie et al. (1985). We propose a general Chi-square statistic that addresses an unambiguous null hypothesis of homogeneity among several survival or recovery rates. With this statistic, specific hypotheses of differences in rates can be simult
Authors
J.R. Sauer, B.K. Williams
Contaminant residues in fish from Tensas River National Wildlife Refuge
Tensas River National Wildlife Refuge, Madison Parish, Louisiana, consists of bottomland hardwood swamps interspersed with small lakes and bayous supporting a diverse assemblage of waterfowl, fish, and assorted species of game and nongame wildlife. Fish collected in the refuge in 1984–85 from areas receiving direct inflow from agricultural runoff contained from 5 to 10 μg/g total DDT (primarily DD
Authors
Parley V. Winger
A national migratory gamebird harvest survey: A continuing need
No abstract available.
Authors
J. Tautin, S.M. Carney, J.B. Bortner
Wildlife conservation through scientific research: 50th anniversary of the Patuxent Wildlife Research Center
No abstract available.
Authors
D.L. Trauger, N. C. Coon
Kirtland's warblers on the nesting grounds during the post- breeding period
Information indicates that a substantial number of breeding birds remain in Michigan through September, and a few individuals probably remain into early October. Migration apparently consists of two waves of migrants: an early departure (mid-August to early September); and late departure (late September). Based on our findings, we recommend that major Kirtland's warbler areas be kept closed int
Authors
P.W. Sykes, C.B. Kepler, David A. Jett, M. E. DeCapita
Late record of Kirtland's warbler on the breeding grounds
New late date for the Kirtland's Warbler was recorded on the breeding grounds on October 1.
Authors
P.W. Sykes, D.J. Munson
Recruitment failure in American avocets and black-necked stilts nesting at Kesterson Reservoir, California, 1984-1985
There was a high incidence of embryo mortality and deformities in black-necked stilts nesting at Kesterson Reservoir during both years of this study and in American avocets during 1985. The concentrations of selenium in eggs at Kesterson Reservoir were sufficiently elevated to have caused the reproductive problems observed. Selenium appears to be the primary cause of the recruitment failure of sti
Authors
M.L. Williams, R. L. Hothem, H. M. Ohlendorf
Effects of strychnine on raptors: A commentary
A commentary on Cheny, C.D., S.B. VanderWall, and R.J. Poehlmann. 1987. Effects of strychnine on the behavior of great horned owls and red-tailed hawks. Journal of Raptor Research 21(3):103-110.
Authors
Stanley N. Wiemeyer
A technique to prevent capturing birds in unattended, furled mist nets
A technique was developed to prevent the inadvertent capturing of birds in unattended mist nets left in place for long periods of time. This was accomplished by placing furled nets on top of 9-inch wide strips of 30-pound roofing felt secured to the ground between net support poles. All materials used are widely available and procedures used to make the felt strips and install them are described
Authors
P.W. Sykes