Pittsburgh Peregrine Falcons
This webcam is located at the University of
Pittsburgh at the top of the Cathedral of Learning. Peregrine
Falcons have nested at the Cathedral of Learning since 2002.
Dorothy and E2 are the parents at this site. Dorothy began
nesting here in 2002 with her first mate, Erie. E2 arrived in
the fall of 2007 when Erie disappeared. Dorothy fledged 22
chicks in seven years with Erie and 7 chicks since 2008 with E2
Peregrine Falcon Facts
The Peregrine Falcon was listed as an
Endangered Species by the U.S. Fish and Wildlife Service in 1972
following the catastrophic decline of the species worldwide. In
response and after the banning of DDT, the Peregrine Fund, a
non-profit organization, was organized with a mission to
reintroduce the species into North America.
Some of the earliest reintroduction sites included historic
nesting areas in Pennsylvania during the 1970s. The Peregrine
has subsequently experienced one of the most dramatic recoveries
of any endangered species, and was formally removed from the
federal list in 1999. The Peregrine Falcon continues to be
listed by the Pennsylvania Game Commission as an Endangered
species because of the small local population and continued
Peregrine Falcons are
very strong fliers and often reported to be the fastest bird in
the world. Their average cruising flight speed is 24 to 33 mph,
increasing to 67 mph when in pursuit of prey. When stooping, or
dropping on prey with their wings closed, it's been calculated
that Peregrine Falcons can achieve speeds of 238 mph.
The birds do no nest building beyond a
ritualized scraping of the nest ledge to create a depression in
the sand, gravel or other substrate of the nest site. Scrapes
are about 9 inches in diameter and 2 inches deep.
Clutch Size: 2–5 eggs
Number of Broods: 1 broods
Egg Length: 2"–2.2" in
Incubation Period: 29–32 days
Nestling Period: 35–42 days
Egg Description: Pale creamy to brownish, dotted or
blotched with brown, red, or purple.