Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16779
A comparative test of the investigator as a variable in aging quail
To test the reliability of current techniques, five biologists appraised the ages of 200 quail from a random sample of wings collected during the 1952-53 hunting season in Alabama. Attempt was made to distinguish adults from juveniles, to ascertain the stage of post-nuptial and post-juvenile molts, and to estimate the age of juveniles according to days or weeks. Three 'problem' wings in this s
Authors
W. Rosene, F. Fitch
Distinction of maritime and prairie populations of blue-winged teal
No abstract available.
Authors
R. E. Stewart, J.W. Aldrich
Fifty-fifth Christmas Bird Count. 159. Ocean City, Md
The distribution of dynamic pressure behind a Harris' hawk's wing was sampled using a wake rake consisting of 15 pitot tubes and one static tube. The hawk was holding on to a perch, but at an air speed and gliding angle at which it was capable of gliding. The perch was instrumented, so that the lift developed by the wing was known and the lift coefficient could be calculated. The mean of 92 estima
Authors
C.S. Robbins
Nineteenth breeding-bird census. 9. Virgin bottomland white spruce forest
No abstract available.
Authors
R. E. Stewart
Winter losses of Canada geese at Pea Island, North Carolina
Report of research and findings to date. Topics discussed include: studies on life history and biology of gizzard worm; results of autopsies; experiments on survival and transmission of gizzard worm eggs and larvae in both field and laboratory; persistence of infections; and results of infections in geese of different ages. Cause of deaths has not been finally determined, but indications are tha
Authors
A.B. Cowan, C. M. Herman