Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16780
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
Ticks as a factor in nest desertion of California brown pelicans
In summary, our observations suggest that O. denmarki may be an important environmental factor influencing the distribution and success of Brown Pelican nests in the Gulf of California. More information on these relationships may be unobtainable without seriously disturbing and destroying large numbers of nests.
Authors
Kirke A. King, James O. Keith, Christine A. Mitchell, James E. Keirans
Application of census techniques to habitat preservation strategy
Island biogeography concepts applied to breeding bird populations of woodlots clearly explain why certain passerine species typical of tracts of 1 km2 or more are absent from tracts one-half or one-quarter that size. Many 'natural areas' now being preserved are too small to support the complete complement of nesting species; this is partly because little knowledge of the minimum areas required is
Authors
R.F. Whitcomb, C.S. Robbins
Island biogeography and 'Habitat Islands' of eastern forest. III. Long-term turnover and effects of selective logging on the avifauna of forest fragments
No abstract available.
Authors
B.L. Whitcomb, R.F. Whitcomb, D. Bystrak