Artificial Increase in Reproduction of Wild Peregrine Falcons

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Abstract
Within the past 20 yr breeding peregrine falcons (Falco peregrinus) have vanished from the eastern USA, and only a remnant population presently exists in the western USA. The major cause of the decline is organochlorine [e.g., DDT] induced reproductive failure. Captive breeding and reintroduction of peregrine falcons offer clear promise for sustaining remnant populations and restoring extinct populations in the presence of DDT contamination. The combination of dummy egg substitution and augmentation with captive-produced young and young hatched from artificially incubated wild eggs appears to be an effective technique for increasing productivity in this remnant population of falcons. The procedure is complex, requiring artificial incubation, captive production and care of young and precise field information.

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