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Agkistrodon is a genus of pit vipers commonly known as American moccasins. [2] [3] The genus is endemic to North America, ranging from the Southern United States to northern Costa Rica. [1] Eight species are currently recognized, [4] [5] all of them monotypic and closely related. [6] Common names include: cottonmouths, copperheads, and cantils. [7]
The eastern cottonmouth (Agkistrodon piscivorus piscivorus) [4] [5] was once classified as a subspecies of the cottonmouth (Agkistrodon piscivorus).However, DNA based studies published in 2008 and 2015, revealed no significant genetic difference between the eastern cottonmouth (Agkistrodon piscivorus piscivorus) and the western cottonmouth (Agkistrodon piscivorus leucostoma) and synonymized ...
Common names include cottonmouth, northern cottonmouth, water moccasin, swamp moccasin, black moccasin, and simply viper. [14] Many of the common names refer to the threat display, in which this species often stands its ground and gapes at an intruder, exposing the white lining of its mouth.
A flying paradox, the house finch is both native and introduced to North America. Originally native to Mexico and the Western United States, house finches were shipped to New York City and sold as ...
The wagtails, longclaws, and pipits are a family, Motacillidae, of small passerine birds with medium to long tails. Around 70 species occur in five genera.The longclaws are entirely restricted to the Afrotropics, and the wagtails are predominantly found in Europe, Africa, and Asia, with two species migrating and breeding in Alaska.
Two species also breed in western Alaska, and wintering birds may reach Australia. They are ground nesters, often in rock crevices on steep banks or walls, laying (3–)4–6(–8) speckled eggs at a time. [6] Among their most conspicuous behaviours is a near constant tail wagging, a trait that has given the birds their common name.
Contemporary moccasins Osage (Native American). Pair of Moccasins, early 20th century. Brooklyn Museum. A moccasin is a shoe, made of deerskin or other soft leather, [1] consisting of a sole (made with leather that has not been "worked") and sides made of one piece of leather, [1] stitched together at the top, and sometimes with a vamp (additional panel of leather).
The willow ptarmigan is a medium to large ground-dwelling bird and is the most numerous of the three species of ptarmigan.Males and females are about the same size, the adult length varying between 35 and 44 centimetres (14 and 17 in) with a wingspan ranging from 60 and 65 centimetres (24 and 26 in).