Skip to main content
U.S. flag

An official website of the United States government

Publications

This is a list of publications written by Patuxent employees since Patuxent opened in 1939.  To search for Patuxent's publications by author or title, please click below to go to the USGS Publication Warehouse.

Filter Total Items: 8128

Wood duck observed following geese Wood duck observed following geese

No abstract available.
Authors
Matthew C. Perry, Frank B. McGilvrey

Eggshell breakage by incubating black ducks fed DDE Eggshell breakage by incubating black ducks fed DDE

Black duck (Anas rubripes) hens fed 10 ppm dry weight (approximately 3 ppm wet weight) of p,p'-DDE in the diet laid eggs with shells 22 percent thinner at the equator, 30 percent thinner at the cap, and 33 percent thinner at the apex than those of controls. Natural incubation increased shell cracking more than fourfold as compared with mechanical incubation. Hens removed cracked eggs...
Authors
J. R. Longcore, F. B. Samson

Eggshell thinning, chlorinated hydrocarbons, and mercury in inland aquatic bird eggs, 1969 and 1970 Eggshell thinning, chlorinated hydrocarbons, and mercury in inland aquatic bird eggs, 1969 and 1970

In the Upper Great Lakes States, 9 out of 13 species of fish-eating birds were found in 1969-70 to have sustained statistically significant decreases in eggshell thickness since 1946. Maximum changes in a thickness index occurred in great blue herons (-25%), red-breasted mergansers (-23%), common mergansers (-15%). and double-crested cormorants (-15%). Heron eggs taken in Louisiana...
Authors
R.A. Faber, J.J. Hickey

Toxicity and persistence of mirex in birds Toxicity and persistence of mirex in birds

No abstract available.
Authors
W. H. Stickel, J.A. Galyen, R. A. Dyrland, D.L. Hughes
Was this page helpful?