Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 41778
Rockets, radios, and research, or 'bugging the black duck'
No abstract available.
Authors
J.K. Ringelman, J. R. Longcore
Feeding ecology and development of juvenile black ducks in Maine
Data from 41 juvenile Black Ducks (Anas rubripes) collected in the Penobscot River valley of Maine from June through August 1974-76 were used to estimate the proportion of aquatic invertebrates in the prefledging diet and the allometric growth rates of the tarsi, flight muscles, and alimentary system. The proportion of aquatic invertebrates in the diet of downy and partially feathered juveniles av
Authors
Kenneth J. Reinecke
The seventy-ninth Audubon Christmas bird count. Introduction. North Carolina, South Carolina, Georgia, Florida
No abstract available.
Authors
P.W. Sykes
Incidence of embedded and ingested shot in oiled ruddy ducks
No abstract available.
Authors
M. C. Perry, J.W. Artmann
Effect of DDE on circulating luteinizing hormone levels in ring doves during courtship and nesting
No abstract available.
Authors
P.J. Richie, T.J. Peterle
Statistical problems arising from surveys of rare and endangered forest birds
No abstract available.
Authors
F.L. Ramsey, J. M. Scott, R.T. Clark
Forty-second breeding bird census: 198. Upland tulip-tree-maple-oak forest
No abstract available.
Authors
C.S. Robbins
Scent-marking in lone wolves and newly formed pairs
Scent-marking was studied in wolves (Canis lupus) along 133 km of tracks in northern Minnesota during winters of 1975 to 1976 and 1976 to 1977 and in two captive packs and four captive pairs for various periods. Lone wolves, which possess neither mates nor territories, rarely marked by raised-leg urination and defaecated and urinated less along roads and trails, where territorial pairs and packs
Authors
R.J. Rothman, L. D. Mech
Thirty-first winter bird-population study. 12. Hickory-oak-ash floodplain forest
No abstract available.
Authors
C.S. Robbins
Thirty-first winter bird-population study. 13. Upland tulip-tree-maple-oak forest
No abstract available.
Authors
C.S. Robbins
Mathematical models and population cycles: A critical evaluation of a recent modeling effort
No abstract available.
Authors
J. D. Nichols, J.B. Hestbeck, W. Conley