![]() In all plumages, birds appear hooded due to the dark cap and broad mustache mark. We described eight principal characters which allowed us to identify individual peregrines in the field. A Peregrine Falcon Watch program (PEFA) is offered at the Precipice Trail parking lot where scopes are set up to view the nesting area and falcons. Bill is yellow at the base grading to gray and then black toward the tip. grine falcons (Falco peregrinus Tunstall 1771). ![]() Exposed fleshy parts including the cere, eye ring, and feet are bright yellow. The peregrine is a true falcon with a toothed upper mandible, a notched lower mandible, and a circular nostril with a central bony tubercle. Beginning in the 1970’s, a national effort was undertaken to recover breeding populations and to restore the species throughout the historic range. The peregrine was listed as federally endangered in 1970 under the Endangered Species Conservation Act. Two of the three North American subspecies were nearly decimated and by the early 1960’s all known breeding pairs east of the Mississippi had disappeared. The peregrine suffered dramatic worldwide population declines at the hands of pesticides in the mid-1900’s. Peregrine Falcons are dark on the back and lighter underneath and they appear to have dark gray to black hoods on their heads. Considered a wanderer, or peregrinator, the aptly named peregrine falcon is a cosmopolitan species with populations found on every continent with the exception of Antarctica. Since medieval times when valued as a hunting companion of royalty, the peregrine has been recognized for its’ breathtaking beauty and speed. Few species of birds have ever been so long esteemed as the peregrine falcon. This is not unusual as peregrine falcons are an endangered species in Wisconsin Nearly 50-70 of local Peregrine Falcon eyasses do not make it past their first year due to many factors.
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