Peregrines Are Pairing Up | Outside My Window


Peregrine pair at Cuyahoga Valley National Park, Nov 2018 (photo by Chad+Chris Saladin)

While we wait for the first egg at the Hays bald eagle nest, other raptors are getting into a breeding mood. Red-tailed hawks are soaring together. Peregrines are pairing up.

Pittsburgh’s peregrines won’t lay eggs until March but they’re already busy claiming territory, attracting mates, and courting. You’ll see them perching near each other in prominent locations, engaging in spectacular courtship flights, the male bringing food for his lady, and the pair bowing at the nest (only visible on a falconcam). This activity makes February and March my favorite months for peregrine watching.

Claiming territory is a blatant activity but the peregrine’s first egg date is nearly impossible to determine without a falconcam. Unlike bald eagles, peregrines nest on inaccessible ledges and don’t begin incubation until the next to last egg has been laid. The only sign that they’re incubating is that you see only one peregrine for more than a month; the other one’s on the nest.

Thanks to the falconcam at the University of Pittsburgh’s Cathedral of Learning we know that the resident female, Hope, lays her first egg between March 6 and 15. She and her mate Terzo are already courting as seen on Monday Feb 4. Watch them on the National Aviary’s streaming falconcam.

Hope and Terzo bow at the Cathedral of Learning nest, 4 Feb 2019 (photo from the National Aviary falconcam)

Visit the sites below to see Pittsburgh’s peregrines in person. Every site (except Pitt) needs additional observers and every observation is useful. You can help! Leave a comment if you want to join.

Region Nesting Territory
City of Pittsburgh Cathedral of Learning
Downtown Pittsburgh
Monongahela Watershed Westinghouse Bridge
Elizabeth Bridge
Ohio River Valley McKees Rocks Bridge
Neville Island I-79 Bridge
Monaca/Beaver bridges
Allegheny River Valley Harmar: Hulton Bridge
Tarentum Bridge
Kittanning: Graff Bridge

For additional information and resources see my Peregrine FAQs page.

(photo by Chad+Chris Saladin of the peregrine pair at Cuyahoga Valley National Park, Ohio. Yes, they perch in trees there.)