On Saturday November 17th, the Millersville Mammalogy Class helped with data collection efforts at the Hawk Mountain Sanctuary.  Students helped with tree boring efforts by taking 2 mm wide core samples out of trees to count their rings and give an estimate of tree age.  Students also visited some of the overlooks at Hawk Mountain and were suprised by a small flock of white-winged crossbills that flew into the area (see below for a reference picture).