Record Display for the EPA National Library Catalog
RECORD NUMBER: 1 OF 10| Main Title | Avian density and productivity studies and analysis on the Pawnee site in 1972 / | ||||||||||||
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| Author | Porter, David K. | ||||||||||||
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| Publisher | Natural Resource Ecology Laboratory, Colorado State University, | ||||||||||||
| Year Published | 1974 | ||||||||||||
| OCLC Number | 15192405 | ||||||||||||
| Subjects | Bird populations--Colorado--Pawnee National Grassland ; Birds--Productivity--Colorado--Pawnee National Grassland ; Birds--Colorado--Pawnee National Grassland--Statistics ; Bird surveys--Colorado--Pawnee National Grassland | ||||||||||||
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| Collation | iii, 77 pages : illustrations ; 28 cm. | ||||||||||||
| Notes | "March 1974." Includes bibliographical references (pages 69-70). |
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| Contents Notes | Accuracy of several avian census methods was investigated on ten 8.1-ha plots and along a 39.4-km roadside count. Methods included spot-mapping, flushing, total counts, ratios, and roadside and Emlen strip count procedures. Another index of breeding activities was obtained through live-trapping, banding, and color-marking. Data were gathered on nesting success, nesting phenology, nest site selectivity, and growth dates for nestlings. |