← Herp Calendar map
Turtles
Black-knobbed Map Turtle
Graptemys nigrinoda
The Black-knobbed Map Turtle's peak months vary by region.
Shows up in 0 ecoregions and 1 state
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.
Turtles
Black-knobbed Map Turtle
Graptemys nigrinoda
Look, don't take. Many states regulate collecting reptiles and amphibians. Photograph it, log it on iNaturalist and leave it where you found it.
Description
The black-knobbed map turtle (Graptemys nigrinoda), formerly known as the black-knobbed sawback, is a small to medium-sized aquatic turtle with light gray skin. The carapace of G. nigrinoda is slightly domed with the first four vertebrae possessing backward-projecting, knob-like processes, which are black in color.Wikipedia ↗
Habitat
The black-knobbed map turtle is endemic to the southeastern United States. Nesting occurs from May to August, and occurs nocturnally on a sandbank.Wikipedia ↗
When it's active
Black-knobbed map turtles are seasonally active from April to late November. Females have a clutch size of roughly five eggs and can lay three or four clutches in a year.Wikipedia ↗

When and where it's active
Each row is its own calendar, counted from records in that area. Seasons shift by place.
PeakShoulderQuiet
States
JanFebMarAprMayJunJulAugSepOctNovDec
AlabamaAbout the Black-knobbed Map Turtle
When is the Black-knobbed Map Turtle most active?
The Black-knobbed Map Turtle's peak months vary by region.
Where does the Black-knobbed Map Turtle live?
It has enough records to show in 0 ecoregions and 1 states, including Alabama.