Osprey populations were further decimated through the effects of pesticides on their reproductive capabilities. From 1982 to 1990, more than 30 of these released birds returned as adults and built nests. Through 1990, these birds produced 49 young. Similar releases in Tioga and Butler counties, at the rate of 8 to 12 young per year through 1994 should help extend the breeding population of ospreys farther westward along the headwaters of the Susquehanna and Allegheny. Concurrently, the Chesapeake Bay population is expanding up the Susquehanna River.
Management includes monitoring, nest site protection and erection of artificial nest platforms.