K Dixon 1951 Parus Apr. 9 Barton Cr, 4 mi SW Austin, 500 ft., Travis Co., Texas it flew N again and I gave up the chase at 8:35. This 8 had been exchanging song with a bird farther S. I worked S to the fence, heard song from the mouth of the tributary canyon and spent some time calling up other birds. I started down the canyon at 9:00. There was a thrush singing on the N side of the creek in junipers but not steadily. I worked downstream and spent a few minutes in collecting a blue jay. One thrush downstream was singing rather frequently. In this area there was a rocky bluff about 50 ft high on the S side of the creek and a gentle slope to the N. Above the cliff was a dense woodland of juniper, elm, and Spanish oak while a fringe at the base of the cliff included oaks. There were a few sycamores along the creek as well - large rocks in streamcourse, not a running stream at present. I located a thrush singing steadily in tall timber and took him at 9:40 (#54). As I walked upstream I heard a song exchange between the 8 at the mouth of the tributary and the one on the N bank. I ran down the latter; bird scolding me in sycamore having moved downstream - yet not yet. Bird believed to be a thrush flew across creek (broad here at bend). Individual I was watching flew a nos also, to juniper and then oak at top of cliff - sang from there. I started up the hill at 10:00.