Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16783
No. 123. Puerto Rican parrot survey in eastern Puerto Rico
No abstract available.
Authors
C.B. Kepler
Blood protozoa of free-living birds
Blood protozoa were first reported from wild birds in 1884. Since then numerous surveys throughout the world have demonstrated their presence in a wide variety of hosts and localities with continuing designations of new species. Taxonomic determinations include parasites in the genera Plasmodium, Haemoproteus, Leucocytozoon, Babesia, Lankesterella and Trypanosoma. Transmission of Plasmodium by mo
Authors
C. M. Herman
Black duck harvest and population dynamics in eastern Canada and the Atlantic Flyway
No abstract available.
Authors
R.K. Martinson, A. D. Geis, R.I. Smith
Water-level contour maps of the carbonate rocks of the Great Valley in Lehigh County, Pennsylvania
No abstract available.
Authors
H.N. Flippo, C. R. Wood
Natural history of the King Rail
The King Rail (Rallus elegans Audubon), largest of North American rails, is indeed an elegant bird, as its Latin name implies. Its striking appearance (fig. I), secretive nature, and association with a variety of wetland habitats make it a favorite of bird students and rail hunters. The King Rail is found in most of the eastern half of North America, from the Atlantic coast to the Great Plains and
Authors
Brooke Meanley
Dieldrin and DDT: effects on sparrow hawk eggshells and reproduction
Patterns of reproductive failure in declining populations of several European and North American raptorial species were duplicated experimentally with captive American sparrow hawks Falco sparverius that were given a diet containing two commonly used organochlorine insecticides. Major effects on reproduction were increased egg disappearance, increased egg destruction by parent birds, and reduced
Authors
Richard D. Porter, Stanley N. Wiemeyer
Composition of deeper subsurface waters along the Atlantic continental margin
No abstract available.
Authors
Frank T. Manheim, M. K. Horn
Observations in deep-scattering layers off Cape Hatteras, U.S.A.
No abstract available.
Authors
John D. Milliman, Frank T. Manheim
Structure of the New England herring gull population
Measurements of the rates of population increase, reproduction, and mortality together with an observed age ratio, were used to analyze the population of the Herring Gull in New England. Data from sporadic censuses prior to this study, aerial censuses by the authors, and National Audubon Society Christmas Bird Count indicated that the New England breeding population has been doubling every 12 to 1
Authors
John A. Kadlec, William H. Drury