We were up Rock Creek Rd, north of Sheridan today, 0.25 mile past the end of the paved road at a gate on the east side of the road. We heard a sparrow singing from large D. fir trees at the edge of a Christmas tree farm. It sang repeated, buzzy triplets: "Bzzzzzz, Bzzzzzz, Bzzzzzz." It sounded like a CLAY-COLORED SPARROW, but it was high in the tree. I tried playing a tape, but it did not come down to where we could really see it. The song did not match any song I've heard from a Chipping Sparrow. Hmmmm? Paul Sulllivan & Carol Karlen McMinnville