|Grand Canyon in Arizona|
The Grand Canyon national park is located in the North West of Arizona. The Grand Canyon was carved by the Colorado River. Founded in 1919, the park covers a territory of 4 927 km². He is attended annually by more than four million visitors. Natural and landscape of the region diversity has been recognized world heritage of humanity by UNESCO in 1979. 355 species of bird, 89 mammalian, 47 reptile, 9 amphibian, 17 fish, and thousands of species of invertebrates are found in the Park of the Grand Canyon. The puma, lynx, coyote and Rocky Mountain Goat are mammals who live on both sides, but they are difficult to observe. Several species are threatened or endangered: Oxyloma haydeni kanabensis is a snail found in a few Prairie Park. Gila cypha and Xyrauchen texanus are two fish living in the Colorado and its tributaries. Pelecanus occidentalis californicus or Pelican Brown of California as well as the Empidonax traillii are also very rare. The California condor, one of the largest birds in the world, has been reintroduced in the 1990s. This 40,000 years in the Grand Canyon, it almost disappear due to hunting and lead poisoning. In 1987, there remained only 30 people in the world, who’s nine only in freedom (California).