Midget Faded Rattlesnake - Crotalus oreganus concolor Introduction In Wyoming, the Midget Faded Rattlesnake can be found in the Lower Green River Valley (Baxter and Stone 1985). Bullsnake They are harmless, but will readily bite when harassed. Comment 357,448 square Kilometers from Natural Heritage Program range maps. They are also good swimmers. Natural History The midget faded rattlesnake is currently considered a subspecies of the common western rattlesnake. Score G - 200,000-2,500,000 km squared (about 80,000-1,000,000 square miles). Shaun and I found a few of them this Summer down in that area as well. The fangs can be folded back inside a skin fold to protect them when their mouth is closed. The midget faded rattlesnake is a comparatively diminutive species of rattlesnake that is observed in the states of Utah, Wyoming, and few parts of Colorado, in USA. The western rattlesnake occurs throughout the western United States, southern Canada, and northern Mexico (Klauber 1972, Stebbins 1985). Range Extent. The midget faded rattlesnake is by far the more poisonous of the two, but there aren't very many of them in the state, and they only live in the Flaming Gorge area. generally considered to be a rare taxon in Wyoming and across its range. The western rattlesnakes encompass five different subspecies: the southern Pacific rattlesnake (C. oreganus helleri), the northern Pacific (C. o. oreganus), the Grand Canyon rattlesnake (C. o. abyssus), midget faded rattlesnake (C. o. concolor) and the Great Basin rattlesnake (C. o. lutosus). midget faded rattlesnake populations have lower genetic diversity than most other rattlesnake populations, effective population sizes less than 50, and evidence of an historic bottleneck. The identity of your serpent, is a Midget Faded Rattlesnake. It is not uncommon to find one 4 - 5 feet off the ground in mesquite, manzanita or other shrubs. There are four species and three subspecies (western rattlesnake) in the state. The majority of this species’ range extends southward from the cities of Rock Springs and Green River. The range of the Midget Faded rattlesnake, Crotalus viridis concolor, is limited to the Colorado Plateau and has only been documented in the western counties of Moffat, Rio Blanco, Garfield, Mesa, Delta, Montrose, and San Miguel. Midget Faded Rattlesnake ( Crotalus oreganus concolor ) Venomous Westslope Click Image for more photos. I love how muted their coloring is! I did take a look at your blog and photos. Score E - Relatively Stable (±25% change). The prairie rattlesnake … The snake inhabits rocky hillsides and woods and is found near shrubs, sagebrush, and junipers Comment Habitat is likely stable within +/- 25% since European settlement, but persecution by people may drive local extirpations of this species. Long-term Trend. The rattlesnake is the only venomous snake in Utah. Because I had studied range maps, and field guides, and rarely set out without the companionship of a fellow ... Mia! pygmy rattlesnake range map Home; Events; Register Now; About We detected four genetic population clusters across the area, and three sites across the area appeared to be important source sites. The only other venomous snake in all of Wyoming is the midget faded rattlesnake found only in southwestern Wyoming. Description: The color pattern consists of a pinkish, pale brown, yellow-brown, straw-colored, reddish or yellow-brown ground color, overlaid with a series of brown elliptical or rectangular dorsal blotches. 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