AFTER a summer of raising young and months of migrating, tundra swans are ready to loaf on the lake and bulk up on needed nutrients. But, when they get to their favorite food haunts, they may find them filled with houses. It’s been nearly four years since tundras graced the ground of the subdivision below. The barn and silo still stand as remnants of the old farmstead. nentally with this species. That’s why the tundra swan has been deemed a ‘responsibility species’ — one that our state plays a key role in keeping common — in Pennsylvania’s Wildlife Action Plan.” So what do we do to fulfill this responsibility? Tundra swan roosting areas are fairly stable and secure. Problems could, however, arise with adjacent land development and increases in disturbance. Biologists suggest that 500 acres of known or potential roosting habitat in the Lebanon/Lancaster County region be secured and that human disturbance at current roost sites be monitored and, if necessary, managed. FEBRUARY 2010