The Peregrine Falcon (Falco peregrinus) is a worldwide species found on all continents except Antarctica. Within North America, the species my be found almost anywhere, but it primarily breeds in western mountains as well as some montane areas in the east. Wintering birds may often be found in many southern U.S. cities where they cause the local Rock Pigeon populations to be extra vigilant. In the 1970s this species was in a steep population decline, but the banning of DDT as well as placing this species on the Endangered Species list are two factors credited with bringing the bird back to decent numbers. The species was recently taken off the Endangered Species list, a prime example of how that list is supposed to work. I am posting a few old shots of this species here, but hope to be able to take some newer and higher-quality images and add them here in the future. The adult bird on the left was perched on a bridge support in Corpus Christi, Nueces Co., Texas, in March, 1991. It was photographed with a Canon T-90 and FD 400mm F/4.5 lens on Kodachrome 64 film. The next two shots were taken of an immature bird in Austin, Travis Co., Texas in August, 1992 with the same equipment.