Banks 1959 Leucostite tephrostis 1. July 2 Slate Peak, 6900+ft., Okanogan Co., Wash. As I was walking up this road to this peak from Harts Pass, groups of 3 + 4 of these birds flew across the road ahead of me and settled in the rocks/talus" where blasting and bulldozing had shoved them over the side. The birds were blown by fairly heavy wind as they flew. One or two alighted on the tops of small (3-4ft.) trees, but almost immediately went to the ground. I obtained one bird, 666, and the others took flight in a flock - estimated 25. Elevation is estimated.