For the last forty years, NYC Audubon's conservation programs have studied and advocated on behalf of the City's wild birds. NYC Audubon, working with a network of volunteers and scientists, has fought to preserve all bird habitat, from marshlands and nesting islands for herons and egrets to woodland park areas so important to migrating and nesting species.
Migrating birds may mistake a dangerous building for a safe resting place. This can occur in two ways. A building that has plants or trees behind glass can actually attract birds. As they fly around looking for food and perches they can injure themselves or even die by crashing into the glass. A second way a building can be perilous to migrating birds is by presenting highly reflective glass near the greenery found in parks large and small. Again, birds see a safe haven where there isn't one, and will collide with the building.
The greatest global threat to birds is habitat loss and degradation. New York City, the most densely populated major city in the United States, is nevertheless traced by a vast network of viable bird habitat: 30,000 acres of forests, grasslands, wetlands, and islands, and 578 miles of waterfront.