K Dixon 1952 Parus atricristatus Jan. 31. 11 mi. NWourdanton, 700 ft. Atascosa Co., Texas. CLOUDY; WIND intermittent from S as I returned to area of morning's work at 3:00 pm. Titmouse singing E of crossfence and another to N of road along fence. I followed latter up and located birds W of fence at S edge of swale. This bird had moved E. I recorded number of phrases per song burst for this bird. Tyrus tyur (7, 7, 7, 8, 7, 9, 10, 10, 10, 7, 8, 9, 9, 8, 10, 10, 2, 6) -- song broken off even though S to S singing. As I located pair at 3:12, S began to sing from bare mesquite, peter - - - - - very rapid 7 and 5 phrases mostly.... this in answer to song from S (I thought there were one burst from SW also I saw seen at 9:35 today). Mate of the singer was present, foraging near base of a ?persimmon. I left the area about 3:15 and worked S. At 3:28 persistent singer SE of broken posts in cross fence initiated song peter - (6 and 7 phrases) Song (peter) also to SE of his position and to S as well (peer - - - -). I worked thru brush to place where one bird was holding forth, calling see see si vet vet. Bird to W answered vet vet and I heard top of 2 birds there. They worked E and I lost them. Bird to E seemed to be alone and had feathers of occiput ruffled up as had the S dominated by his aggressive nerglibn this a.m. During the late afternoon (at 4:20 and perhaps another time) S in positions of that lone bird initiated