Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16784
Mid-Atlantic coast osprey population: Present numbers, productivity, pollutant contamination, and status
An estimated 233 + 16 (95% C.I.) pairs of ospreys (Pandion haliaetus) nested in coastal New Jersey, Delaware, Maryland, and Virginia in 1975. The present populations were considerably smaller than those reported for selected locations at the turn of the century in these four states. The New Jersey population has continued to decline during the last 25 years, although it showed some signs of impr
Authors
C. J. Henny, M. A. Byrd, J.A. Jacobs, P.D. McLain, M.R. Todd, B.F. Halla
Results of Georgia's clapper rail banding program
No abstract available.
Authors
T. Hon, R.R. Odom, D.P. Belcher
Fulvous whistling duck populations in Texas and Louisiana
No abstract available.
Authors
Edward L. Flickinger, D.S. Lobpries, H.A. Bateman
Plumage sequence and taxonomy of Laysan and Nihoa finches
No abstract available.
Authors
R.C. Banks, R.C. Laybourne
The decline and fall of the Eskimo curlew, or why did the curlew go extaille?
No abstract available.
Authors
R.C. Banks
Songbird mortality in Prince Georges County, Maryland
No abstract available.
Authors
M. K. Klimkiewicz
The use of feeding habitat by a colony of herons, egrets, and ibises near Beaufort, North Carolina
Nine species of herons were followed to their feeding sites from a nesting colony near Beaufort, North Carolina, by airplane. Except for the Cattle Egret, which flew exclusively to fields and dumps, all other species flew mainly to saltmarsh habitat. In addition, habitats were selected in relation to tidal depth and it appears, at least for the Great Egret, that low tide habitats were preferred.
Authors
Thomas W. Custer
DDE and avian eggshell thinning: Ultrastructural evidence of decreased parathyroid activity
No abstract available.
Authors
A.H. Parsons, T.J. Peterle
Bird population trends detected by the North American breeding bird survey
Continental populations of most bird species have remained quite stable since 1966, but there have been many regional changes associated with migration disasters, breeding failures and range expansions, and a few dramatic increases in populations of introduced species. These changes often are better represented by curvilinear than by linear regressions.
Authors
D.R. Bystrak, C.S. Robbins
Bird atlasing in the United States
Since the Breeding Bird Survey provides an annual quantitative sample of about 75% of the 1? blocks of latitude and longitude in every state except Alaska and Hawaii, and 47% of the 1/2? blocks (equivalent on the average to a 48 km square), no national Atlas based on merely presence or absence has been contemplated. Conventional atlases are in progress in the states of Maryland (2.5 km), Massaohus
Authors
C.S. Robbins