The Pennsylvania Audubon Society has listed the park as Pennsylvania Important Bird Area (IBA) #1, and it considered one of the best birdwatching sites in Pennsylvania. The diversity of habitats on the peninsula makes it an ideal home for over 320 species of birds. (For comparison, the United States has about 925 bird species.) Forty-five of the bird species found in the park are listed as "endangered" or "threatened", including the piping plover, cerulean warbler, rusty blackbird and saltmarsh sharp-tailed sparrow. Waterfowl and wading birds live at Presque Isle year round. Four species of gull and three species of tern can be seen at Gull Point during the summer months. The majority of collection during the annual Christmas Bird Count, which has been held in Erie County since 1956, is garnered from observations made by volunteers within the park. Many different species of plants and animals can also be found at Presque Isle State Park due to the wide variety of ecological zones.