What has contributed to the recovery of the peregrine falcon?
The most significant factor in the recovery of the peregrine falcon was the restriction placed on the use of chlorinated hydrocarbon pesticides. The use of DDT was banned in Canada in 1970 and in the United States in 1972. Consequently, the reproductive rates of peregrine falcons improved and its comeback began. But the banning of DDT on its own was not enough. Listing the peregrine as endangered in 1970 gave the remaining pairs and their habitat the protection necessary to increase and reoccupy their historical range without persecution. The recovery of this species was enhanced by innovative recovery programs like the release of captive-bred birds to augment the wild population.
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