Yosemite National Park is causing the problem. Despite the richness of high-quality habitats in Yosemite, the brown bear, California condor, and least Bell's vireo have become extinct in the park within historical time, and another 37 species currently have special status under either California or federal endangered species legislation. The most serious current threats to Yosemite's wildlife and the ecosystems they occupy include loss of a natural fire regime, exotic species, air pollution, habitat fragmentation, and climate change. On a more local basis, factors such as road kills and the availability of human food have affected some wildlife species. Yosemite National Park has
Yosemite Village Historic District or Valley District Building (1926), both designed by Park Service architect Herbert Maier. All are rustic in character. Other buildings in the area include the Pohono Indian Studio (1925), which is used as a gift shop, and the Ansel Adams Gallery, a complex of five buildings incorporating what was first known as Best's Studio. The Yosemite Village district was placed on the National Register of Historic Places on March 30, 1978. Yosemite Village Historic District The Yosemite Village Historic District encompasses the primary built-up section of the Yosemite Valley as it was developed by the National Park Service for Yosemite