The Adirondack Mountains are in Upstate New York. The Adirondack Mountains form the southernmost part of the Eastern forest-boreal transition ecoregion. They are heavily forested, and contain one of the southernmost distribution taiga in North America. The forests of the Adirondacks include spruce, pine and deciduous trees. The mountains include many wetlands. Common birds include the boreal chickadees, gray jays, spruce grouse, black-backed woodpeckers, common loons and crossbills. Nearly 60 per cent of the park is covered with northern hardwood forest.