Mourning Dove Status Report, 1971
Author | : James L. Ruos |
Publisher | : |
Total Pages | : 40 |
Release | : 1972 |
ISBN-10 | : OCLC:505209389 |
ISBN-13 | : |
Rating | : 4/5 (89 Downloads) |
Download or read book Mourning Dove Status Report, 1971 written by James L. Ruos and published by . This book was released on 1972 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: U.S. mourning dove population indexes declined from 1970 to 1971 by 5% in the Eastern Management Unit, 4% in the Central Management Unit and by 2% in the Western Management Unit. The 1971 indexes were below the 10-year means, 1961-70, by 7% in the Eastern Unit, 15% in the Central, and 25% in the Western. Regression analyses of the call-count data for 1961-71 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, 2.5% a year in the Central, and 4.4% in the Western.