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The breeding bird survey : its first fifteen years, 1965-1979 / by Robbins, Chandler S.(CARDINAL)157299; Bystrak, Danny.(CARDINAL)328936; Geissler, Paul H.(CARDINAL)320907;
Bibliography: pages 129-132.
Subjects: Bird populations; Bird populations; Bird surveys; Bird surveys;
Available copies: 1 / Total copies: 1
unAPI

Bird migration : a general survey / by Berthold, P.(Peter),1939-(CARDINAL)321031;
Includes bibliographical references (pages 207-237)
Subjects: Birds;
Available copies: 1 / Total copies: 1
unAPI

Born to sing: an interpretation and world survey of bird song. by Hartshorne, Charles,1897-2000.(CARDINAL)127423;
Bibliography: pages 256-272.
Subjects: Animal sounds.; Birdsongs.;
Available copies: 2 / Total copies: 2
unAPI

A land manager's guide to point counts of birds in the Southeast / by Hamel, Paul B.(CARDINAL)168781; United States.Forest Service.Southern Research Station.(CARDINAL)268558;
Includes bibliographical references (page 20).
Subjects: Birds; Birds; Bird surveys;
Available copies: 1 / Total copies: 1
unAPI

Waterfowl Status Report, 1977 / by Smith, Carney S.; Rhoades, Sharon L.; Norman, K. Duane.; U.S. Fish and Wildlife Service.;
Appendix A. Waterfowl Winter Survey Tables.Appendix B. Waterfowl Breeding Ground Survey Tables.Appendix C. Waterfowl Harvest Survey Tables.Breeding Ground Surveys.Waterfowl Harvest Surveys.Winter Survey.This report contains information obtained from the 1976-77 midwinter waterfowl survey, the 1977 waterfowl breeding population and production surveys, and the waterfowl harvest surveys for the 1976-77 hunting season.
Subjects: Technical reports.; Waterfowl; Water birds; Bird surveys.; Bird populations;
Available copies: 1 / Total copies: 1
unAPI

Problems in aerial surveys of waterfowl in eastern Canada / by Chamberlain, E. Burnham(Edward Burnham),1895-1986.(CARDINAL)203549; Kaczynski, Charles F.(CARDINAL)851371; U.S. Fish and Wildlife Service.(CARDINAL)138186;
Includes bibliographical references (page 13).Abstract -- History of study -- The problems -- Stratifying samples according to black duck densities -- Establishing the phenology of the nesting cycle -- Stratifying for phenological difference -- Discussion -- References.Banding is one of the most important elements in the study of migratory game bird populations. Over 3,100 woodcock were banded in North America during 1965, with major programs conducted in Louisiana, Maine, Michigan, and West Virginia.Experimental surveys of waterfowl breeding populations in eastern Canada have been conducted intermittently since 1949 to develop a procedure for making reliable estimates of breeding populations and production of black ducks and Canada geese in this region. This report reviews in detail the black duck breeding population surveys. The vastness of the breeding range precludes complete coverage; even the amount of sampling required for sound predictions is a major consideration. Several approaches to stratified sampling failed to produce a useful plan. Variations in phenology within the survey area appear to be a major factor in developing a reliable sampling plan; a method that takes these variations into account is presented. Analysis of data from 4 years gave trends in breeding population size that agreed generally with trends in corresponding winter population data; previous interpretation methods did not produce this agreement.
Subjects: Technical reports.; Aerial surveys.; Bird populations; Bird surveys.; Phenology.; Water birds; Waterfowl; Waterfowl;
Available copies: 1 / Total copies: 1
unAPI

Storm-petrels of the eastern Pacific Ocean : species assembly and diversity along marine habitat gradients / by Spear, Larry B.(CARDINAL)320809; Ainley, David G.(CARDINAL)320808;
Includes bibliographical references (pages 71-75)Study area and methods -- Results -- Patterns compared across species -- Discussion.
Subjects: Storm petrels; Storm petrels; Storm petrels; Storm petrels; Species diversity; Species diversity; Bird surveys; Bird surveys;
Available copies: 1 / Total copies: 1
unAPI

Results of a biological reconnoissance of the Yukon river region. General account of the region. Annotated list of mammals. by Osgood, Wilfred Hudson,1875-1947.; Bishop, Louis B.;
General account of the region -- Annotated list of mammals / by Wilfred H. Osgood -- Annotated list of birds / by Louis B. Bishop.
Subjects: Mammals; Mammal surveys; Birds; Bird surveys;
Available copies: 1 / Total copies: 1
unAPI

Pelagic studies of seabirds in the central and eastern Pacific Ocean. by King, Warren B.,ed.(CARDINAL)158284;
Bibliography: pages 272-277.
Subjects: Sea birds; Pacific Ocean Biological Survey Program.;
Available copies: 1 / Total copies: 1
On-line resources: Suggest title for digitization;
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Hunting and harvest trends for migratory game birds other than waterfowl, 1964-76 / by Martin, Elwood.(CARDINAL)321191;
Bibliography: page 13.
Subjects: Statistics.; Fowling; Upland game bird shooting; Hunting surveys;
Available copies: 1 / Total copies: 1
unAPI

Results 1 to 10 of 149 |