Attached is a picture taken in the Selkirk Mountains of northeast Washington State. I am in debate as to red-tailed vs. yellow pine. It appears to have features of both and five different field guides aren’t helping. Anyways, it was in an open/”managed” forest environ, 4500′ elevation. Most were found high in trees or shrubs. The large, bushy tail suggests red-tailed but lacks that very defined red that field guides point out, however its tail seems larger and more red than the yellow-pines I’m used to in the Cascades. Its back stripes are dark, but not very dark stripes. Its rump color seems olive-gray, suggesting more yellow-pine, ah…chipmunks are a real difficult group to ID! Any thoughts are very appreciated.