Every autumn, the skies above a forested ridge in eastern Pennsylvania fill with movement. Eagles drift on rising air, falcons streak across the horizon and kestrels appear in quick flashes before disappearing south.

Discover how socialite Rosalie Edge transformed bird conservation by purchasing a mountain in Pennsylvania, leading to the protection of hawks and other raptors. Learn about her…

Every autumn, the skies above a forested ridge in eastern Pennsylvania fill with movement. Eagles drift on rising air, falcons streak across the horizon and kestrels appear in…