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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
Filter Total Items: 6158
Compendium of crane behavior. Part 1: Individual (nonsocial) behavior Compendium of crane behavior. Part 1: Individual (nonsocial) behavior
This paper provides the organizational framework, nomenclature, and abbreviated descriptions for all conspicuous nonsocial behavioral units for all 15 species of crane. We present eight generalized functional classes of behavior. These classes include about 90 discrete motor patterns that constitute the nonsocial repertoire of all cranes. We present this compendium to facilitate...
Authors
D. H. Ellis, George W. Archibald, S.R. Swengel, C. B. Kepler
Contaminants in drainage water and avian risk thresholds Contaminants in drainage water and avian risk thresholds
No abstract available.
Authors
J. P. Skorupa, H. M. Ohlendorf
Contaminants in the coastal environment Contaminants in the coastal environment
No abstract available.
Authors
P.H. Albers
Cryopreservation of crane semen Cryopreservation of crane semen
The method for the cryopreservation of crane semen at Patuxent Wildlife Research Center is described in detail. Cryopreservation is useful for the long-term storage of crane semen and for specialized propagation needs. A 50% fertility rate from most sandhill cranes, Grus canadensis, inseminated with frozen-thawed semen can be expected. Additional research should improve the fertility...
Authors
G.F. Gee
Demography of eastern population tundra swans, Cygnus columbianus columbianus Demography of eastern population tundra swans, Cygnus columbianus columbianus
No abstract available.
Authors
J. Bart, R. Limpert, S. Earnst, W. Sladen, J.E. Hines, T. Rothe
Ecological impacts of nature-dependent tourism Ecological impacts of nature-dependent tourism
No abstract available.
Authors
J. L. Marion
Effects of contaminants on birds Effects of contaminants on birds
No abstract available.
Authors
G. H. Heinz, Stanley N. Wiemeyer
Effects of environmental contaminants on raptors in the Midwest Effects of environmental contaminants on raptors in the Midwest
No abstract available.
Authors
Stanley N. Wiemeyer
Federal research on the conservation of migratory nongame birds in the United States Federal research on the conservation of migratory nongame birds in the United States
In the United States, the term 'nongame birds' applies to all bird species that are neither hunted nor legalIy endangered or threatened. Although ultimate responsibility for protection of migratory nongame birds lies with the federal government, research and management efforts by the key federal landholding agencies have historically emphasized species of economic importance, game birds...
Authors
M.A. Howe
Feeding habitat use by wading birds: some management issues Feeding habitat use by wading birds: some management issues
No abstract available.
Authors
R.M. Erwin
Field testing a new generation of radio-telemetry equipment Field testing a new generation of radio-telemetry equipment
No abstract available.
Authors
L.D. Mech