Raptor Surveys and Monitoring Active
This research largely involves developing and applying survey methods to gather and analyze data to study raptor population biology and population status. Results also provide land and wildlife managers with information about the general distribution and local occurrence of birds of prey. Most raptor species occur in low densities compared to other birds. Raptors are widely dispersed during much of the year, and they often exhibit behavior that makes them difficult to observe. Our work has involved innovation with searching strategies and sampling designs to develop safe, practical methods for finding and counting raptors in diverse, sometimes remote locales. We also use existing records of observations and counts for learning where raptors occur in areas of interest to managers, and to synthesize information to be used to summarize the status of raptors.
Below are publications associated with this project.
Surveying woodland raptors by broadcast of conspecific vocalizations
Recent trends in counts of migrant hawks from northeastern North America
Autumn migrations of peregrine falcons at Assateague Island, Maryland/Virginia, 1970-1984
Estimation of the proportion of an area occupied by an animal species
- Overview
This research largely involves developing and applying survey methods to gather and analyze data to study raptor population biology and population status. Results also provide land and wildlife managers with information about the general distribution and local occurrence of birds of prey. Most raptor species occur in low densities compared to other birds. Raptors are widely dispersed during much of the year, and they often exhibit behavior that makes them difficult to observe. Our work has involved innovation with searching strategies and sampling designs to develop safe, practical methods for finding and counting raptors in diverse, sometimes remote locales. We also use existing records of observations and counts for learning where raptors occur in areas of interest to managers, and to synthesize information to be used to summarize the status of raptors.
- Publications
Below are publications associated with this project.
Filter Total Items: 16Surveying woodland raptors by broadcast of conspecific vocalizations
We surveyed for raptors in forests on study areas in five of the eastern United States. For Cooper's Hawks (Accipiter cooperi), Red-shouldered Hawks (Buteo lineatus), and Barred Owls (Strix varia) the contact rates obtained by broadcasting taped vocalizations of conspecifics along roads were significantly greater than contact rates obtained by only looking and listening from the roadside. Broad-wiAuthorsJ. A. Mosher, M.R. Fuller, M. KopenyRecent trends in counts of migrant hawks from northeastern North America
Using simple regression, pooled-sites route-regression, and nonparametric rank-trend analyses, we evaluated trends in counts of hawks migrating past 6 eastern hawk lookouts from 1972 to 1987. The indexing variable was the total count for a season. Bald eagle (Haliaeetus leucocephalus), peregrine falcon (Falco peregrinus), merlin (F. columbarius), osprey (Pandion haliaetus), and Cooper's hawk (AccAuthorsK. Titus, M.R. FullerAutumn migrations of peregrine falcons at Assateague Island, Maryland/Virginia, 1970-1984
No abstract available.AuthorsF.P. Ward, K. Titus, W.S. Seegar, M.A. Yates, M.R. FullerEstimation of the proportion of an area occupied by an animal species
No abstract available.AuthorsP.H. Geissler, M.R. Fuller