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 National Park were the first to tour the area. Hutchings and Ayres were responsible for much of the earliest publicity about Yosemite, writing articles and special magazine issues about the Valley. Ayres' style in art was highly detailed with exaggerated angularity. His works and written accounts were distributed nationally, and an art exhibition of his drawings was held in New York City. Hutchings' publicity efforts between 1855 and 1860 led to an increase in tourism to Yosemite. Wawona was an Indian encampment in what is now the southwestern part of the park. Settler Galen Clark discovered the Mariposa Grove of giant sequoia