Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16783
Distribution of populations and hunting kill of the canvasback
No abstract available.
Authors
R. E. Stewart, A. D. Geis, C.D. Evans
Distribution and ecology of whistling swans in the Chesapeake Bay region
The Whistling Swan, Olor columbianus, is of particular significance in the Chesapeake Bay region, since major wintering and transient populations occur here regularly, constituting in some years more than half the total population of the species. Some of these concentrations are so large that they attract many bird-watchers, who often travel long distances to see them. Whistling Swans are also of
Authors
R. E. Stewart, J.H. Manning
Rodent repellents
Why rodent repellents are needed, how they are tested, and what ones are showing promise. Some of the best ones now known are too toxic, too costly, or both.
Authors
J.B. DeWitt, J.C. Besser
Birds and Aircraft on Midway Islands, 1956-57 Investigations
The purpose of this study is to determine the extent to which certain species of birds contribute to the hazard to aircraft at Midway; to learn more about the population dynamics and habits of these species to determine what type of control measures might be possible without endangering the species; and to test methods of control which are suggested. Most of the study has been devoted to the two s
Authors
K.W. Kenyon, D.W. Rice, C.S. Robbins, J.W. Aldrich
Birds of Maryland and the District of Columbia
No abstract available.
Authors
R. E. Stewart, C.S. Robbins
In vitro and in vivo sensitivity testing of a fish-pathogenic Corynebacterium
No abstract available at this time
Authors
K. Wolf, C.E. Dunbar
'Operation recovery'--the Atlantic coastal netting project
No abstract available.
Authors
J. Baird, C.S. Robbins, A.M. Bagg, J.V. Dennis
One new and one previously unreported species of nasal mite (Acarina, Speleognathidae) from N.A. birds
No abstract available.
Authors
G. M. Clark
Bird populations in relation to changes in land use
Changes in breeding-bird populations on a 210-acre farm area were observed from 1947 to 1952. During this period, clearing, drainage, and planting changed the area from a partially abandoned farm with only 34 acres in cultivation to a modem conservation farm. Number of bird species nesting in the area was about 10 per cent lower in the last three years than in the first three years; number of nest
Authors
O. Warbach
The function of the Fish and Wildlife Service in insect control programs
No abstract available.
Authors
J.B. DeWitt