Stopped by the Clock Tower for a morning look at the Lawrence Peregrines.  One was perched on a ledge just above the west facing clock face.  Scanned to see if the other peregrine was nearby.  Noticed a hawk-like silhouette atop the distance smokestack almost a 1/4 of a mile away on the north side of the Merrimack River in the 250 Canal Street complex!  Sure enough, turned out to be the other peregrine falcon!