With the extinction of peregrine falcons throughout the Northeast due to the effect of the pesticide DDT on their reproductive systems, efforts are made to reintroduce peregrines using captive-bred chicks from Cornell University.

 

Photo: Research Associate Dr. Heinz Meng (right) of SUNY New Paltz and a colleague banding a peregrine falcon for release. Photo from the Mohonk Preserve Daniel Smiley Research Center archives.