Brian J. Halstead, Glenn D. Wylie, Michael L. Casazza, Habitat Suitability and Conservation of the Giant Gartersnake (Thamnophis gigas) in the Sacramento Valley of California, Copeia, Vol. 2010, No. 4 ...

The giant garter snake (Thamnophis gigas) is one of North America’s largest native snakes, reaching up to 64 inches in length. The species is endemic to the Central Valley and originally inhabited ...