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Astragalus cremnophylax is a rare species of milkvetch known by the common names sentry milkvetch and cliff milkvetch. It is endemic to Arizona, where the three varieties grow in three separate locations. The rarest variety, var. cremnophylax, is a federally listed endangered species which grows only on the rim of the Grand Canyon.
The California condor (Gymnogyps californianus) is a New World vulture and the largest North American land bird. It became extinct in the wild in 1987 when all remaining wild individuals were captured, but has since been reintroduced to northern Arizona and southern Utah (including the Grand Canyon area and Zion National Park), the coastal mountains of California, and northern Baja California ...
The snail had been listed as endangered on the United States Fish and Wildlife Service list of endangered species in 1991. In June 2021, following genetic testing that showed it was never a distinct subspecies, the Fish and Wildlife Service delisted the Kanab ambersnail from the federal endangered species list. [8]
This list contains 359 species. Unless otherwise noted, all are considered to occur regularly in Grand Canyon National Park as permanent residents, summer or winter visitors, or migrants. The tags below are used to designate the abundance of some species. (R) Rare - "usually seen only a few times each year" per the NPS (44 species)
Kaibab squirrel at Grand Canyon National Park North Rim. Kaibab squirrels usually have a black belly (which is sometimes gray), white tail, tufted ears and chestnut brown back. [3] The tufts on the ears grow longer with age and may extend 1 to 2 inches (2.5 to 5.1 cm) above the ears in the winter, and may not be visible in the summer.
Vasey's Paradise. Vasey's Paradise, also stylized as Vaseys Paradise, is an oasis approximately 1.5 miles (2.4 km) below the Mile 30 Sand Bar on the Colorado River within Grand Canyon National Park, in Coconino County, Arizona, United States.
The only Oxyloma species or subspecies listed in the IUCN Red List of 2006 is the Kanab ambersnail (Oxyloma haydeni kanabense), which is critically endangered. No others have been assessed by the IUCN. The Niobrara ambersnail (Oxyloma haydeni haydeni) is listed as a "Wyoming Species of Greatest Conservation Need" by the Wyoming Game and Fish ...
2 Protection status under U.S. Endangered Species Act of 1973 (16 U.S.C. 1531-1544) ... Downstream view of the Colorado River at river mile 175 in the Grand Canyon.