Registration opens 9 a.m. Monday, August 3 for this free 3-hour pontoon trip to see the Purple Martins congregate at one of the largest roosts in Pennsylvania before their annual migration. Departs 6:30 p.m. Register online or call 814-833-7424 (max. 4 persons per call) for August 7, 8, 13, 14, 15, 18, 20 or 21. Visit www.purplemartin.org for more.