Oklahoma’s records for the northwestern marsh rice rat trace the low, wet country of the state’s southeastern corner, where marshes, wet meadows, and slow drainages thread down toward the Red River valley. That’s a different world from the forested highlands nearby, since this is a semiaquatic species built for standing water and thick wetland growth rather than dry ridgeline woods.
Long hind feet and a strong swimming stroke let it move confidently through flooded ground, and it builds sheltered nests just above the waterline in dense marsh vegetation. It forages through mud and litter for insects and other small prey, staying close to cover that hides it from owls and snakes.
Oklahoma has only 77 recorded observations, most of them from 2009 or earlier, with a lift in May. That thin, dated record set likely reflects how rarely this wetland habitat gets surveyed here, not a real change in the animal’s presence.
Full species profile
