Groundhogs turn up in 933 Maine records, more than all but a handful of mammals in this atlas, and the calendar tells its own story: reports don’t fade out gradually as winter nears, they stop almost completely by November and don’t pick back up until March.
A true hibernator, not just a light sleeper
That sharp winter gap in the record is the clearest signal in this dataset. Groundhogs are genuine hibernators. Their body temperature drops for months at a stretch inside a burrow chamber, unlike black bears, which stay in a lighter winter dormancy and rouse more easily. Maine’s long, cold season pushes that hibernation later into fall and further into spring than in warmer states, which is likely why the record goes quiet for nearly five months straight.
Farmland edges over deep forest
Groundhogs need open ground to graze, pastures, roadsides, field edges, and forest clearings rather than continuous conifer canopy. That’s likely why records lean toward Maine’s coast and nearby coastal parks, where farmland and settlement break up the tree cover, and why even a deep-woods park like Baxter shows records mostly from its cleared edges and access roads rather than the unbroken interior.
Status in Maine
NatureServe ranks the groundhog S5 in Maine, secure, and the species is native across the state. Between its hibernation habits and its habitat needs, the groundhog reads as a farmland-and-edge animal that has simply adapted well to Maine’s mix of open ground and surrounding forest.
