Status and Monitoring The Peregrine Falcon was removed from the Federal Endangered and Threatened Species List in August of 1999. Outlined as a requirement for removal, a monitoring plan was developed and is currently in affect. If populations were again to decline, the species would be reinstated. Each individual state also maintains an Endangered and Threatened Species List. The Field Museum’s Chicago Peregrine Program monitors our Illinois Peregrines. Monitoring is critical for evaluating population viability and recovery. The Peregrine Program’s goal is to have a self-sustaining population of breeding falcons that is at a low risk (less than 1%) of statewide extirpation. With current population levels, we are well on our way to achieving this goal. In the Midwest, Illinois is the first state to reclassify the Peregrine’s status and upgrade it from “Endangered” to “Threatened.” continue >>