Changes in distribution occurred during years following winters in which biologists observed lower productivity and survival of young animals and adult cows. The dynamics and behavior of the population are typical of animals reintroduced into suitable habitat. Between 1983 and 1993 estimates of survival and reproductive rates of the bear population were stable and distribution and movements of bears were consistent. This consistency suggests that the bear population is stable. A mean litter size of 4.2 during 1988-90 was consistent with the 3.0 reported for ANWR in 1984 and 4.3 in 1985.
Population size appears stable.
Between 1988 and 1990 we observed 31 nesting attempts by golden eagles on the north slope of the ANWR between the Canning and Kongakut rivers. The number of young remained constant from 1988 to 1990, suggesting that the ANWR eagle population is also stable. N.E. Walsh, and D.D. Young. Arctic National Wildlife Refuge. Interim Report, 1988-1990.