A western species of falcon, almost never found in the east, has turned up within an hour's drive of my home and thus made a trip to see it yesterday irresistable. The bird is a Prairie falcon, and it's been hanging around some fields and a quarry just north of Shippensburg, PA. The Prairie falcon is about the size of a crow and a much faster flier. There are more strikingly plumaged raptors than this one, but watching him in flight was quite a treat.
