Excerpt from Monitoring Plan for the American Peregrine Falcon: A Species Recovered Under the Endangered Species Act Thus, although Peregrines are still accumulating contaminants from their prey, the levels are currently low enough to allow for successful reproduction and expansion of the population. Nonetheless, the continual introduction of anthropogenic chemicals to the environment far outpaces research on their effects on wildlife. Peregrines, as predators, remain vulnerable to persistent environmental contaminants. In the final delisting rule, we recognized the possible threat that environmental contaminants pose to the sustained recovery of this species and stated we would include a contaminant monitoring component in the post-delisting monitoring plan. This component is found in the Contaminant Monitoring section below.

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