Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16780
New distributional records of breeding Mexican ducks
No abstract available.
Authors
R. E. Tomlinson, S.H. Levy, J.J. Levy
Distribution of two western clapper rail races as determined by responses to taped calls
During 1969 and 1970, surveys of the endangered Yuma Clapper Rail were conducted using taped calls to elicit responses from the birds. During the two summers, more than 158 Yuma clappers were located in cattailtule marshes along the Colorado River south of Needles, California, to the International Boundary, a distance of about 240 miles. Clappers (probably of the same race) were also found in estu
Authors
R. E. Tomlinson, R.L. Todd
The California condor in the Pacific Northwest
The California Condor (Gymnogyps californianus), once found along the Pacific Coast from Baja California to British Columbia, had become very rare north of California by 1850. Koford (1953), summarizing information available on the species in the Pacific Northwest, tentatively concluded that birds seen in that area were wanderers from California, perhaps forced north in some years by food shortage
Authors
S.R. Wilbur
Clapper rail studies in New Jersey under the Accelerated Research Program
No abstract available.
Authors
R.E. Mangold
Molt patterns and weight changes of the American woodcock
A study of molt and changes in body weight of American Woodcock was conducted to better understand the summer and fall behavior of these birds and to indicate periods of physiological stress. The postnuptial molt of adults was a complete molt beginning in late June and ending by the middle of October. In contrast, the postjuvenal molt was a less intensive partial molt beginning in mid-July but als
Authors
R.B. Owen, W.B. Krohn
Movements of geese on wintering grounds studies
No abstract available.
Authors
F.W. Martin, D.A. Smithey, R. H. Chabreck
[Book review] Words for Birds: A Lexicon of North American Birds with Biographical Notes, by Edward S. Gruson
No abstract available.
Authors
C.S. Robbins