As publishedWestern OR: Sept 1, 2026 - Jan 31, 2027; Eastern OR: Oct 10, 2026 - Jan 31, 2027
Same season and 10/day aggregate bag as California quail; in Eastern Oregon capped at 2 mountain quail out of the 10-bird aggregate (possession cap 6 of the 30-bird aggregate).
Shares ODFW's Forest Grouse and Mountain Quail Parts Collection Summary ('wingbee' report) with dusky, ruffed, and sooty grouse. A fresh search this pass confirmed the same finding as the Tier A pass -- no edition newer than 2021 (published 2022) is publicly located, though the underlying wing-collection program continues annually. Active program, no dated fresher report.