Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Mourning Dove Status Report, 1970 PDF full book. Access full book title Mourning Dove Status Report, 1970 by James L. Ruos. Download full books in PDF and EPUB format.
Author: James L. Ruos Publisher: ISBN: Category : Bird populations Languages : en Pages : 638
Book Description
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: James L. Ruos Publisher: ISBN: Category : Bird populations Languages : en Pages : 638
Book Description
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: ISBN: Category : Wildlife conservation Languages : en Pages : 174
Book Description
A bibliography comprising annotated citations of 2037 scientific and technical publications from ten series issued by the U.S. Fish and Wildlife Service. Includes a six-page introduction containing a history of the Service and a description of the research and development series.
Author: Eldon Ralph Clark Publisher: ISBN: Category : Bird populations Languages : en Pages : 542
Book Description
Information on the current status and population trends of the American woodcock is provided by annual singing-ground surveys over much of the species' breeding range and a wing-collection survey in the eastern United States. the 1970 singing-ground survey showed no change in the breeding population index for the Eastern region, a 3.12% increase for the Western region, and a 2.11% increase rangewide. This index is based on 752 comparable survey routes, all randomly selected, 35% more than the 568 routes used in 1969. The wing-collection survey for the 1969-70 season suggested a decline of 7.03% in productivity the previous summer, a slight decline in the average daily bag per hunter, and a sharper drop of 11.1% in the average seasonal bag. There is evidence that the woodcock harvest and the number of hunters participating increased over previous years, with the 1969-70 harvest exceeding 1.1 million birds. Woodcock research is increasing, with the present emphasis directed to banding on breeding grounds.
Author: James L. Ruos
Author: James L. Ruos
Author: 
Author: 
Author: 
Author: 
Author: 
Author: 
Author: 
Author: Eldon Ralph Clark
Author: