Aquaculture and Fisheries Commons^™

Observations Of Red-Tailed Hawks Capturing Wild Ducks In North Dakota, Robert K. Murphy

United States Fish and Wildlife: Staff Publications

Ducks (Anserifonnes; Anatinae) are preyed on by red-tailed hawks (Buteo jamaicensis) in the northern Great Plains of North America, yet I found no published, direct observations of captures of wild ducks by red-tailed hawks in the region. I made the following observations in south central Burke County, northwestern North Dakota.

H. Albert Hochbaum: A Man Not Forgotten, Jerome R. Serie

United States Fish and Wildlife: Staff Publications

This book is a posthumous collection of essays by Al Hochbaum, compiled and edited by his son George, and is a unique blend of classic literary pose and artistry. It is colorfully illustrated with brilliant photographs by two of the best waterfowl photographers, Jack A. Barrie and Glen D. Chambers. Hochbaum's painting of a canvasback flight over Delta Marsh graces the frontispiece and several of his pen-and-ink sketches are scattered throughout. Both the foreword, by Gene Bossenmaier, and the introduction, by George Hochbaum, pay tribute to Hochbaum' s dedication to waterfowl, his immense talents, and a lifetime of accomplishment. Hans …

Out-Of-Season Births Of Elk Calves In Wyoming, Bruce L. Smith

United States Fish and Wildlife: Staff Publications

ive out-of-season births of Rocky Mountain elk were documented over a 24-month period at the National Elk Refuge, Wyoming. One of four November neonates was radio-instrumented and subsequently died seven days later due to hypothermia. An April-born calf was killed by a coyote. Supplemental winter feeding of elk at the Refuge may increase the frequency of asynchronous reproduction.

A Contaminants Evaluation Of The Big Blue River In Southeastern Nebraska, Brent J. Esmoil, Kirk D. Schroeder, Timothy E. Fannin

United States Fish and Wildlife: Staff Publications

We collected three composite fish and three composite sediment samples from the Big Blue River in southeastern Nebraska to determine the presence of agricultural chemicals or other contaminants. Inorganic analyses consisted of individual analyses for arsenic, selenium, and mercury, as well as an ICP scan for other elements. Organic analyses included organochlorines, polynuclear aromatic hydrocarbons, organophosphate and carbamate pesticides, and chlorphenoxy acid herbicides.

Arsenic was detected in the sediment samples, but not in the fish samples.

Selenium was detected in one of three sediment samples and in all fish samples.

Mercury was not detected in sediment samples, but was detected …