K Dixon 1951 Parus bicolor Apr. 22. (1 mi. E College Station, 370 ft., Brazos Co., Texas) to E in dense woods. Exchange of song continued steadily until ~1:53. I flew E to snag and hotted down along tip of branch inclined 45° upward inspecting a longitudinal furrow. Bird called twice, flew to oak ~40 yd E and sang one - silent, then resumed song at 1:56. Bird to E did not sing except in answer (I think there were 2 to E, the one along the glade and one closer, the latter now silent). We walked N, crossing from pasture into woods at 2:00. Closer bird to E had moved N. At 2:05 thrush sang peter --- from edge of woods and apparently was the I from wooded pasture, leaving N. However, within a few yards N the fence was the area where the S member of two families in dispute disappeared at 4:40 pm Mch 10. At 2:17 bird in pasture resumed song. At 2:20 bird we had watched sang briefly. Bird well to W singing also. N bird sang at 2:25 peter --- 3, 4, 4, 3, 3, 3, it was in oak - elm - along streamcourse - several dead trees in the vicinity - we left at 2:35 without seeing any definite activities of this bird - it did not sing steadily. At 2:40 I in pasture serving steadily; bird to E sang occasionally in answer. We walked E along pipeline but heard no thrush voices until opposite area where I sang at 1:25 - This individual continued as we left area, 2:45. CLOUD COVER THEN, wind from W