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Census techniques for forest birds

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Abstract

1. Although bird censuses are imprecise, they have considerable value in a relative sense. 2. If the techniques are designed so as to minimize effects of variables that can be controlled, valid comparisons may be made among bird populations of two or more plots. 3. The spot-mapping method is recommended for greatest precision, and when a study is to be repeated over a period of years. Carefully standardized transects or point counts are most effective when many plots are being compared, and relative rather than absolute numbers will suffice. 4. Any method selected may be calibrated by a more thorough coverage of sample plots by the same or another method. 5. Demand for data on bird populations and species composition in specific habitats is increasing rapidly. Therefore, the results of census work should be published or at least made available through data banks or other means.

Additional Publication Details

Publication type:
Book chapter
Publication Subtype:
Book Chapter
Title:
Census techniques for forest birds
Year Published:
1978
Language:
English
Publisher:
U.S. Forest Service, Southeastern Forest Experiment Station
Publisher location:
Asheville, NC
Contributing office(s):
Patuxent Wildlife Research Center
Description:
176
Larger Work Type:
Book
Larger Work Subtype:
Other Government Series
First page:
142
Last page:
163
Number of Pages:
176