Glaucomys oregonensis Until recently, mammalogists classified two species of flying squirrels in North America. But, in 2017, a third was added with the formal description of the Humboldt’s flying squirrel (Glaucomys oregonensis). Though slightly smaller and darker, this cryptic species was once considered to be part of the northern flying squirrel (G. sabrinus) group but genetic … Continue reading Humboldt’s flying squirrel