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 Transportation Company Office a decorative pattern. After 1927 the importance of stage services declined with the completion of a paved automobile road into the valley, and the YTC Office became a clearinghouse for accommodations in the Yosemite Valley. In the late 1930s the building was converted to a residence. The National Park Service management plan for the Yosemite Valley planned for the removal of buildings considered intrusive in the Old Yosemite Village area. The YTC building was designated for demolition during the Mission 66 program, but was instead moved to the Pioneer Yosemite History Center at Wawona in Yosemite National Park for preservation,