Humboldt’s Flying Squirrel in the San Bernardino Mountains (Southern California)

In June 2020 I took three one-night trips to the Big Bear Lake area in the San Bernardino Mountains east of Los Angeles; spending about 3 hours each night looking for Humboldt’s Flying Squirrel (Glaucomys oregonensis). I spent most of my first trip (June 10) on the northern side of Big Bear Lake; Charles Hood joined me for the second night (June 16) and we focused on Skyline Drive on the south side of the lake, without flying squirrel. On my third trip (June 29) Charles was in Big Bear Lake at a cabin with his wife, but once I sent a text saying I had found a flying squirrel he headed my way.
Trip list of 15+ mammals included a Black Bear with three cubs; and 2 or 3 chipmunk species.
Trip report with site notes, map and photos posted at pacapix.com
Paul Carter