LEW015 1964 33 Aimophila cassini July 2 Wolder Wildlife Foundation, San Patricio Co., Texas chittering. As each successive bird flew in there was a chitter series usually also from remaining bird(s) in surroundings. I think the arriving bird may be the one that chitters. Sounded as if produced by only single bird. 330/100 flight 3.7/min 0900-0910 - to #2 24 songs in 6'20" of active singing. 0903.3 p(3), P, P, P, P, P, fl(3-3), P, fl(3-3), P, fl(3-3), f(3 to ground) wind 0907 - fl(ground to 3), P, P, P, P, fl(3-2), fl(3-2), P(2), fl(2-3)P(3), P, P. was down on ground for 3'40" measurably, fudging to swing #12 (near #8). Several times gust of wind caused trouble for bird in song flight. Flight from 3 to 2 bird appeared to try to land at 2 was blown almost to #1 & finally worked into wind + parallel( to direction(swipes) ) & landed at #2. wind 3.3/min 1000-1000 - to #2 24 songs for 7'20" active singing. quiet for at least 5 minutes prior to 1000. & for 40 sec after 1000. out(2) P, P,P, P,P,P,P(2), P, P, P, P, fl(2-2) then dropped to ground (1004.5). all from #1 8.3% flight only do up from grounder 106.5 - song flight from ground to perch #1 , P, P,P,P,P,P,B,B,P,P,P, P, all perch songs were given from shaded area. 1032 - left area 1602- arrived (back) to #2 sang once just as I arrived & then quit. 1611 - still quiet so went out to hunt for him. Unable to find any sparrows by 1705 so left area. Had started to rain lightly.