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Peregrine falcons and bald eagles are approaching extinction in some portions of North America. Both species are residents on Amchitka. Their principal prey species are also resident. Breeding densities of eagles and peregrines are about 1.0 and 3.2 pairs per kilometer of coastline, respectively. Populations are dense by normal standards and their life tables and reproduction, as discussed, resemble other healthy populations. Winter populations are also discussed.
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White et al. (1971) studied this question.
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