The peregrines are seen with greater frequency around the Ayer Mill Clock Tower.  Although they have and occupy numerous perch locations, the primary location atop the weathervane which provides the best vantage point for the surrounding area.  They will move from here in pursuit of prey and will always move to the perch outside of the nest box to protect their territory.  These images are from a late afternoon visit under excellent lighting conditions and include 2 beautiful close up views!

3 photos posted:  http://www.pbase.com/birdshots/image/152459751