Couleuvre mince du Nord

Couleuvre mince du NordQuebec wildlife

Thamnophis saurita septentrionalis

Colubridae

No period published by Québec.ca

Québec.ca publishes no hunting or trapping period for this species. Check the official regulations.

Wikipedia

Couleuvre mince du Nord

Thamnophis saurita septentrionalis, the northern ribbon snake, is a subspecies of garter snake. It is one of four subspecies of the ribbon snake (Thamnophis saurita) and occurs in the United States and Canada in southern Maine, southern Ontario, Michigan, New York, southwestern Nova Scotia, northern Ohio, Illinois, and Indiana. It is listed as a state endangered species in Wisconsin. The Atlantic Canadian population (limited to southern Nova Scotia) is listed as a species at risk both federally (under the Species at Risk Act) and provincially. It is a slender black or brown snake with three bright-yellow or white stripes on its back and sides. The head is black, with the scales alongside the mouth being white. The underside is also white or light yellow, but it is mostly white on juveniles and adults. Adult ribbon snakes are 45–65 cm (18–26 in) in length. Ribbon snakes inhabit marshes or live near the edges of lakes, ponds, and streams. They swim well, and their diets include frogs, tadpoles, salamanders, small fish, and insects. Northern ribbon snakes have from 3 to 26 young, which are born in late summer. The young snakes are 7 to 9 inches (18 to 23 cm) long and are colored the same as the adults. As with most garter snakes, the mother gives birth to live young (ovoviviparous).

Text from WikipediaThamnophis saurita septentrionalis, revision 1333268001, CC BY-SA 4.0, retrieved 2026-09-04. Encyclopedic text reused under CC BY-SA 4.0. Sentences about hunting or regulation are removed: on this site, the rule comes from Québec.ca.

Presence in Quebec

Origin
Indigène
Occurrence
Régulier
Population status
Toute l'année
Certainty
Confirmé

Conservation

Provincial rankS2 — en péril
Status (ESVA Act)Susceptible
JurisdictionQuébec

Québec.ca

Official periods

Source: Québec.ca — tables reproduced as published (retrieved 2026-08-30).

Québec.ca publishes no hunting or trapping period for this species. See the official regulations:

Regulations change. Always check Québec.ca before hunting or trapping.

Where this data comes from

This species is listed in an official government dataset. The identification and status shown in the data sheet are reproduced from it.

Source: List of Quebec’s vertebrate wildlife (LFVQ)Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs. File LFVQ_25_03_2026.csv, retrieved 2026-08-30 · CC BY 4.0.

Measurements, habitat, diet and reproduction are not shown: no official source is attached to them yet.