| 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. |
| Genre: | Book chapter |
| ProdID: | 5210101 |
| Citation Author: | Robbins, C.S. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 163 |
| Citation Issue: | |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Proceedings of the Workshop: Management of Southern Forests for Nongame Birds |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 176 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | 176 |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | U.S. Forest Service, Southeastern Forest Experiment Station |
| Citation Series: | General Technical Report |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Census techniques for forest birds; 1978; Book chapter; Proceedings of the Workshop: Management of Southern Forests for Nongame Birds; Robbins, C.S. |
| Citation Start Page: | 142 |
| Citation Volume: | |
| Citation Year: | 1978 |
| Type: | citation/reference |
| Text: | Census techniques for forest birds; 1978; Book chapter; Proceedings of the Workshop: Management of Southern Forests for Nongame Birds; Robbins, C.S. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 9 Jun 2009 09:23 -0500 |
| Publisher: | U.S. Forest Service, Southeastern Forest Experiment Station |
