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Eastern Gartersnake

Thamnophis sirtalis sirtalis


The eastern gartersnake is highly variable in colour and patterning but tends to be dark green to black with three yellow stripes: one down the back and one on each side, on the second and third scale row. Some individuals have whitish chequered or speckled patterning along the back, and menanistic individuals (black back with no stripes) are very common in some regions (such as on Pelee Island). The eastern gartersnake has a yellowish chin and belly. This species can grow to over a metre in length.


The eastern gartersnake is a habitat generalist and can be found in a wide variety of habitats, including forests, shrublands, wetlands, fields and rocky areas. This species also inhabits many urban and human-dominated landscapes.

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Spotted by

Ontario, Canada

Spotted on Jul 9, 2013
Submitted on Jul 22, 2013

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