[Tweeters] Prairie falcon

[Marilynn Leland via Tweeters]

I’m a novice birder, but believe I saw a nesting pair of prairie falcon at Island Crest Park on Mercer Island.  They are on the light standard overlooking the ball field.  I was surprised to see them in a forested area, but they appeared to be prairie as opposed to peregrine.  Is this unusual.  They appeared to enjoy the baseball game!
Marilynn