Managed to see a Mountain Bluebird while hiking along Gunner’s Ridge in Makoshika State park, eastern Montana (Glendive). Photo is pretty heavily cropped as I was still pretty far off, but that bright blue was visible even from a distance for me.

Mountain Bluebird in profile that was perched on a capstone below the trail, a little less cropped than previous.

Even less cropped photo of the Mountain Bluebird on a capstone, with some of the eroding layers beneath.