: Breeds. Nests on several cliff faces, most consistently on the east side of Champlain Mountain but also Jordan and Beech Mountains, Canada Cliffs and Valley Cove. Locations of active nests varies from year to year and are closely monitored by Acadia National Park personnel. Breeding birds return to their nest sites late Feb-late Mar and probably remain in the area into Nov. A few may overwinter.
: early Apr-mid May, and from late Aug-early Nov with a peak mid Sep-mid Oct. Could be seen anywhere but most frequent the as much migration is . Numbers at the Cadillac Mountain Hawkwatch have increased sharply since the early 2000s but separation of native birds from true migrants is difficult.
: Dec-Feb, perhaps mostly if not entirely native adults.
Miscellany: Peregrine Falcon formerly nested widely in New England but disappeared in the mid 1950s. It was reintroduced in the late 1980s and now seems firmly re-established. They are one of the world's most widely distributed vertebrates missing only from the Antarctic and the Amazon rainforest, and a few other places where they are replaced by close relatives.
Last Updated: June 3rd, 2022