Big Bend National Park, roughly the size of Rhode Island, encompasses a vast diversity of habitats for birds. These include open desert, riparian river corridors, and natural springs; forested canyons; pinyon, oak, and juniper woodlands and the areas that separate them. Over 450 bird species make their home in these varied and beautifully scenic landscapes. Some interesting and rare species include Montezuma quail and elf owls. The Chisos Mountains are home to exquisite species like Aztec thrush, flame-colored tanagers, and red-faced warblers. Easy-to-see inhabitants include Lucifer hummingbirds, zone-tailed hawks, common black hawks, flycatchers (a vermillion flycatcher is seen here), and Townsend's warblers. Because of its sheer size and the huge variety of birds, there are many specialty birding tours available all year round to the park—some with internationally recognized birding experts.