Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16780
Residues of organochlorine pesticides and polychlorinated biphenyls and autopsy data for bald eagles, 1973-74
Thirty-nine bald eagles found sick or dead in 13 States during 1969 and 1970 were analyzed for pesticide residues. Residues of DDE, dieldrin, polychlorinated biphenyls (PCB's), and mercury were detected in all bald eagle carcasses; DDD residues were detected in 38; DDT, heptachlor epoxide, and dichlorobenzophenone (DCBP) were detected less frequently. Six eagles contained possible lethal levels of
Authors
R. M. Prouty, W. L. Reichel, L. N. Locke, A. A. Belisle, E. Cromartie, T. E. Kaiser, T. G. Lamont, B. M. Mulhern, D. M. Swineford
Serum proteins of Canada goose (Branta canadensis) subspecies
Serum proteins from nine subspecies of Canada Geese (Brunta canadensis) were analyzed through the use of column and slab acrylamide electrophoresis. Variation was minimal within a subspecies, although all the subspecies were closely related. B. c. leucopareia appeared to be the most distinct subspecies, while maxima and moffitti were the most similar. Our preliminary findings suggest that the el
Authors
R.P. Morgan, S. T. Sulkin, C. J. Henny
Fortieth breeding bird census. 25. Hickory-oak-ash floodplain forest
No abstract available.
Authors
C.S. Robbins
Atlantic Flyway review: Region V
Banding activities in Region V in 1975 were similar to those of 1974. The stations at Woodend and St. Michaels were discontinued, but a new station 5 miles south of St. Michaels was opened at Bellevue by Henry Armistead. For the locations of the various banding stations in Region V see the map in the 1974 report (North American Bird Bander 1:75-82).As in the past several years, the great majority
Authors
Chandler S. Robbins
Fortieth breeding bird census. 28. Upland tulip-tree-maple-oak forest
No abstract available.
Authors
C.S. Robbins
Impact of the severe winter of 1977 on woodland birds in the Maryland piedmont
No abstract available.
Authors
C.S. Robbins
A new banding technique for nesting adult purple martins
Mery (1966) showed an almost equal sex ratio, males returned more frequently than females, over 50% of returns paired with other returns, an adult return rate of 20%, and no pair bonds maintained for more than one season. Her study lasted 13 years. Our study has shown that the return rate of locals to parent colonies is 4.1%, sex ratios are nearly equal (combination of banding and observation), r
Authors
M. K. Klimkiewicz, P.D. Jung