KDixon 1951 Parus April 2. Avansas River, 5 1/2 mi ENE Skidmore, Bee Co, Texas. During late afternoon (calm, sunny) I did not hear call or song from [illegible] mouse along river S of house. April 13. I did not hear [illegible] mouse in dawn chorus S of house but heard him sing for a while beginning at 6:40. I walked along the N bank of the creek in that area 7:20 - 7:40 but did not hear him. Bird sang again however just prior to 8:00 am. I drove down to the river along the oil line road at 3:45 and commenced mapping. Following notes are per pocket compass reading: fence separating Rodriguez - Driscoll properties runs due N-S. pipeline S of creek runs SW at 200°. Roadway (or firebreak leading NW from road extension and locked gate at Driscoll-Rodriguez line runs at 300° I pored across the bridge to width of the streambank woodlands: N bank E of bridge 60 yards (generous), S bank W bridge, 50 yds. I think the distance on an average varies from 50-75 yds under natural conditions. I noted live oak trees along the S bank below the bridge. April 4 Spring Creek, 6 1/2 mi ENE Skidmore, Bee Co, Texas. SUNNY MORNING, CALM, 50° F at 6:00 am. I drove to the area NE of where I took & 514 (March 30) and N of Territory of 510 and 511, reaching there at 7:10. I walked N slowly and at 7:23 heard song "tree" - - -. I located singer in post oak, perched well up in this leafless tree, erect in the pasture a Wood Porce often assumes. It was 150 yards E and 200 yards N of white corner of fence mentioned previously (distances paced) The bird moved S to a point E of that corner and changed