Peregrine falcon listed as endangered

1970 CEUSA

“In 1970, the American peregrine falcon was listed as endangered under the Endangered Species Conservation Act of 1969 (and then again in 1973 when the Endangered Species Act passed) . . . By the mid 1960's, there were no peregrines in the eastern United States and the decline spread westwards so that by the mid-70's western populations had declined by up to 90 percent . . . drastic declines didn't occur until after the widespread use of a popular insecticide — DDT.”

“Journey with Nature Peregrine Falcons,” Peregrine Falcons, The Nature Conservancy.

Image: The U.S. National Archives via Flickr