Jul 02 2014

Two Peregrine Chicks at Westinghouse

Published by at 7:20 am under Peregrines

Two peregrine chicks at Westinghouse Bridge on banding day, 1 July 2014 (photo by Thomas Keller, PGC)

Two peregrine chicks at Westinghouse Bridge on banding day, 1 July 2014 (photo by Thomas Keller, PA Game Commission)

 

Just when you thought peregrine nesting season was over, there’s one more nest remaining to fledge in Pittsburgh.

Yesterday morning Tom Keller of the PA Game Commission rode with PennDOT in their graciously provided bucket truck to band the nestlings at the Westinghouse Bridge.  This late nest was first confirmed on May 20 when Dan Brauning and Tom Keller found the female incubating three eggs.  On June 10 Tom confirmed the first hatchling.  Yesterday he banded two females.  (One egg didn’t hatch.)

This late-in-the-season nest cycle is probably a re-nesting after the first attempt failed.  Nest failures at natural cliff sites can be caused by predation but this location is so inaccessible that the re-nest is probably due to a changeover in adults after a peregrine-vs-peregrine challenge.  The banded female, Hecla, hatched in 2009 at the Ironton-Russleton Bridge in Ironton, Ohio and has been present at Westinghouse since 2012.  Perhaps her banded mate is new but no one has been able to read his bands.  He’s still unidentified.

Westinghouse site monitor (and proud “papa”), John English, organized a Banding Watch under the bridge.  Thanks to photos from watchers Maury Burgwin and Donna Memon, I’ll tell the rest of the story in pictures.

The bucket near the nest, peregrine "mom" flies by (photo by Maury Burgwin)

Bucket at the nest, upset peregrine mother, Hecla, flies by (photo by Maury Burgwin)

 

Female peregrine on the attack on Banding Day (photo by Maury Burgwin)

Hecla is very angry. “Get away from my babies!” (photo by Maury Burgwin)

 

Hecla's mate (unidentified) does a barrel roll to defend his nestlings on Banding Day (photo by Maury Burgwin)

Hecla’s mate (unidentified) in a barrel roll defending his nestlings (photo by Maury Burgwin)

 

Female peregrine, Hecla, defending her nest on Banding Day, 1 July 2014 (photo by Maury Burgwin)

Hecla flies under the bridge to attack the banding crew (photo by Maury Burgwin)

 

Male peregrine drives a gull away from the Westinghouse bridge during the excitement on Banding Day (photo by Donna Memon)

Worked up about the banding, the male peregrine drives away everything from the Westinghouse bridge including this hapless gull. “Sorry! Just leaving!” says the gull. (photo by Donna Memon)

 

Stay tuned for Fledge Watch, July 18, 19 and 20!   Check John English’s Westinghouse Peregrines webpage or Pittsburgh Falconuts for details.

 

(photo credits:
Nestlings by Thomas Keller, PA Game Commission.
Action shots of adult peregrines by Maury Burgwin.
Peregrine-vs-gull encounter by Donna Memon
)

One response so far

One Response to “Two Peregrine Chicks at Westinghouse”

  1. Kathy Bramanon 02 Jul 2014 at 1:24 pm

    WOW!!! That barrel roll pic is GREAT!!! Thanks for this report, Kate.

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