While stopping by for a look at the Lawrence Peregrines, under cloudy skies, located the male peregrine on a triangular roof pediment at the NE corner of the New Balance building on Union Street above the south end of the Duck Bridge.  The male was facing north and taking in the view over the Merrimack River.  Then it turned, pooped, and took off in a SE direction over my head.  The change in posture provided a nice look at the leg bands with ability to see from photos the black over green 6/4 bands on the left leg.  Always nice to confirm positive ID!