K Dixon 1951 Parus atricristatus Apr. 30 1 mi. NW Ft. Davis, 5000 ft., Jeff Davis Co., Texas. I slept out on the S side of Limpia Canyon in an unfenced area outside the Davie Mts. State Park. The rather steep and rocky slope above me to the S was grass-covered with scattered oak trees and a few junipers. There were 2 species of liveoak of which my # 456 (Q.) was more common (flowering at this time); less common were gray oak and Spanish (?) oak. Along the stream were tall cottonwoods, small willow and [WALNUT] (# 458). A species of Prunus (chokecherry) grew as a tree at the base of the slope. Catalpa, still leafless, was the common shrub. Central S.T. I awoke at 6:00 am, perhaps late for the dawn chorus. It was not until 6:35 that I heard a titmouse singing upslope, a slow deliberate peer peer peer. There was an answering song from W on that slope. About 6:45 I heard a similar song from a titmouse in a large [WALNUT] tree S of the road. As I approached, he flew N across the streambed and sang from oaks there. He changed to a song which I recorded as picururur or pea-scru-ur, a three-syllabled variant of the "peter" song. Both types of song sounded a bit faint as though from a tired bird which had been singing from dawn until noon. The songs were not loud, clear, ringing. This bird was wary and would not permit an approach so I abandoned chase at 7:10. I walked upslope where the song had originated at 6:35 but was stopped by a fence. A hundred yards or two down the road I walked up an oak-dotted slope but heard no birds 7:40-8:10. I drove still further and heard song from oaks upslope (bird I) and from the cottonwoods along the stream (bird II).