The peregrine falcon recovery from near-extinction caused by DDT poisoning is one of conservation biology most successful stories, demonstrating what targeted intervention can achieve for wildlife welfare.
The peregrine recovery illustrates both the depth of harm that human activities can cause to wildlife — near-extinction through agricultural chemical use — and the effectiveness of targeted welfare and conservation intervention. Individual peregrines in the crash period experienced reproductive failure that was invisible at the individual level but catastrophic at the population level. Recovery programs that captive-bred birds and reintroduced them to historic range gave individual animals the opportunity to live natural lives that the DDT era had made impossible. The recovery serves as proof of concept that committed conservation action can reverse even severe wildlife welfare and population crises.