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| Author | : United States. Bureau of Sport Fisheries and Wildlife |
| Publisher | : |
| Total Pages | : 92 |
| Release | : 1964 |
| Genre | : Wildlife research |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 270 |
| Release | : 1962 |
| Genre | : Animals |
| ISBN | : |
| Author | : United States. Bureau of Sport Fisheries and Wildlife |
| Publisher | : |
| Total Pages | : 96 |
| Release | : 1965 |
| Genre | : Fisheries |
| ISBN | : |
"In the calendar year 1964, the main efforts of the Division of Wildlife Research were directed toward consolidation of recently expanded programs on pesticide-wildlife relations and nuisance-animal control. A modest increase in activities associated with the captive propagation of rare and endangered birds was accommodated, and a great deal of planning laid groundwork for future work with threatened species. There was no change in purpose and function of the Division"--Page 1
| Author | : |
| Publisher | : |
| Total Pages | : 52 |
| Release | : 1972 |
| Genre | : Fishery management |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 1188 |
| Release | : 1964 |
| Genre | : Agriculture |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 1284 |
| Release | : |
| Genre | : Government publications |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 1730 |
| Release | : 1970 |
| Genre | : Government publications |
| ISBN | : |
| Author | : James L. Ruos |
| Publisher | : |
| Total Pages | : 638 |
| Release | : 1971 |
| Genre | : Bird populations |
| ISBN | : |
U.S. mourning dove population indexes increased by 4% from 1969 to 1970 in the Eastern Management Unit, but declined 2% in the Central Management Unit and 11% in the Western Management Unit. The changes were below the 10-year means, 1960-69, by 3% in the Eastern Unit, 15% in the Central, and 27% in the Western. Regression analyses of the call-count data for 1960-70 indicate a statistically significant downward trend in dove breeding populations in all management units; mean rates of decline were 1% a year in the Eastern Unit, 3% a year in the Central, and 4% in the Western
| Author | : |
| Publisher | : |
| Total Pages | : 260 |
| Release | : 1965 |
| Genre | : Animals |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 1744 |
| Release | : 1992 |
| Genre | : Agriculture |
| ISBN | : |
