Bald Eagle Reproduction in California 1972-1973
Thelander CG. 1973. Bald Eagle Reproduction in California 1972-1973. Department of Fish and Game. State of California
During 1973, 31 nesting territories of the southern bald eagle (Haliaeetus leucocephalus leucocephalus) were studied in California. Nineteen pairs were present and 24 young were produced, or 1.26 young per active nest. This level of productivity is considered satisfactory in comparison with other populations. However, of 25 territories observed in both 1972 and 1973, there was a reduction of seven active sites in 1973. Data supports the conclusion that human disturbance,mainly recreational activity and logging operations at nesting sites and foraging areas, are among the major causes of territory abandonment. Based on an evaluation of human disturbance present at each site, six of the sites active in 1973 are in immediate danger of abandonment. The possibility that abandoned territories will be reoccupied is poor under the existing conditions of recreational activity and logging operations.
- Type
- Published Report
- Authors
- Thelander, Carl
- Date of Issue
- 1973-11
- Publisher
- Department of Fish and Game
- Units
- LAVO
- Keywords
- Bald Eagle, biodiversity, California, Eagle, nesting, Reproduction, survey, wildlife management