Most of what Washington knows about the northern bog lemming comes from the state’s northeast corner. Pend Oreille County accounts for more than half of the mapped reports, with smaller clusters in Okanogan and Whatcom counties, and named backcountry like the Pasayten and Salmo-Priest wilderness areas turns up repeatedly. That’s cold, high country of spruce, larch, and wet meadow, and it fits a lemming that favors cool bogs across its wider range. Whether the animal is truly concentrated there or just better surveyed is an open question, because records show where people looked, not where lemmings are commonest.
Reports run from May through September and crest in July, when mountain meadows are snow-free and small-mammal surveys are easiest to run. The winter months are silent in the record, but a lemming active under deep snow is nearly impossible to document, so the quiet season says more about detection than about the animal.
The species’ official standing is as thin as its file. The IUCN hasn’t evaluated it globally, and Washington assigns it no special status of its own. With only a couple of dozen reports statewide, every new observation from a boggy meadow in the northeast highlands carries real weight.
Full species profile
