Snakes
Black-necked Garter Snake
Thamnophis cyrtopsis
Across the regions where it's common, the Black-necked Garter Snake peaks from June to October.
Shows up in 4 ecoregions and 3 states
Keep Herp Calendar free
Hi, I'm Nick. I built Herp Calendar on my own and I keep it free, with no ads. If it has helped you find a herp this season, a small tip goes straight into the hosting and the data work. Only if you can spare it. Either way, I'm glad you're here.
Snakes
Black-necked Garter Snake
Thamnophis cyrtopsis
Description
Common names: blackneck garter snake, black-neck garter snake Thamnophis cyrtopsis, the blackneck garter snake, is a species of garter snake of the genus Thamnophis. Black-necked garter snakes range from 41 cm to 71 cm in length as adults (maximum reported size is 109 cm), and measure about 20 cm at birth.Wikipedia ↗Animal Diversity Web ↗
Habitat
The blackneck garter snake can be found in southeastern and central Arizona, parts of the southwestern United States, Mexico and Guatemala. Found near water in desertscrub, grasslands, chaparral, woodland environments.Wikipedia ↗
When it's active
It is active during the day and during twilight activities, and occasionally at night, hibernating from late fall to winter and mating in late spring or summer. Black-necked garter snakes likely mate in the spring, after emerging from hibernation, as is the case for most Thamnophis species.Wikipedia ↗Animal Diversity Web ↗
When and where it's active
Each row is its own calendar, counted from records in that area. Seasons shift by place.
Ecoregions
States
About the Black-necked Garter Snake
When is the Black-necked Garter Snake most active?
Across the regions where it's common, the Black-necked Garter Snake peaks from June to October.
Where does the Black-necked Garter Snake live?
It has enough records to show in 4 ecoregions and 3 states, including Arizona, New Mexico, and Texas.