The black-footed ferret, or Mustela nigripes, is one of the rarest native mammals in the United States, according to Bagheera. Small populations of these ferrets have been introduced into Wyoming. The primary reasons for their endangerment is habitat destruction and loss of prey.
One of the fastest land mammals in the United States is the Sonoran pronghorn, or Antilocapra Americana sonoriensis. This species is also one of the United States' most endangered animals, with only a small population of 100 living in Arizona. Human encroachment and habitat fragmentation are the main causes for this animal's endangerment.
South Florida is home to the Everglade snail kite, or Rostrhamus sociabilis plumbeus. This raptor bird of prey species has been on the federal endangered list since 1967. Everglade snail kites are primarily found in the Everglades National Park and Lake Okeechobee areas. Causes for endangerment include habitat loss and deforestation.
The wood stork, or Mycteria Americana, has been listed as endangered since the 1970s. Some zoological parks, such as the Jacksonville Zoo, participate in the Wood Stork Conservation program, which aims to restore wood stork populations. Wood stork populations are spread throughout the Southeast United States.
Found only in Harrison County, Mississippi, the Mississippi gopher frog, or Rana capito, lives in temperate forests and freshwater wetlands. This frog has been considered endangered since 2001. Mississippi gopher frogs' range used to include Louisiana and Alabama. Fewer than 100 live in the wild.
Barton Springs salamander, or Eurycea sosorum, are found only in Zilker Park, a large recreation area in the greater Austin, Texas, area. This species is noted for its bright blue and reddish skin. Due to water degradation, this salamander has been on the federal endangered list since 1997.
Also referred to as Alectryon macrococcus, the Mahoe tree is endemic to the Hawaiian Islands. These trees are only found in forests on the island of Maui. These trees require elevations of 1,000 to 3,300 feet for growth. The main causes of endangerment is introduction of invasive plants and wildlife species, such as feral pigs and black twig borer beetles.
Western North Carolina is home to the white irisette, or Sisyrinchium dichotomum. This flowering plant's adult height ranges from 4 to 8 inches. The white irisette's natural range is the Blue Ridge Mountains. Main causes for endangerment include deforestation, road construction and habitat fragmentation.