KDixon 1952 Pareus bicolor - atricristatus Feb 11 3 mi ESE Del Valle, 300 ft, Travis Co, Texas I worked downstream along the S bank of Orion Creek after 9:15; no calls heard until I reached mouth of Creek. I heard a call chiruit and saw 2 birds moving through trees. I couldn't distinguish sex from actions at the time. One bird flew to next tree upstream (general direction of travel) and I took the remaining bird (711 &). The other flew to next trees, scolded, shifted perch, then sang. I took it (710 @). I remained in this area for a few minutes, then worked down the S bank of the Colorado River. Perhaps 50 yards below the mouth of Orion Creek, I heard a song gota --- . This was answered by a bird from across the river and by another birds a hundred yards or so further downstream. I worked along into the territory of the first bird and watched it for a time as it sang from high in the cottonwoods. Bird seemed to be alone as it shifted perch from one tree to another and it sang more steadily than did its neighbors. Then I saw 2 birds fly due E from cottonwood and over my head as though a pursuit was in course. The birds disappeared to E but I heard a clow of ta-t --- notes almost a twitter from that direction. Nothing further for a couple of minutes so I began whistling heeur -- -- -, A 1st mouse flew toward my position from the E and perched almost above me, silent but fluttering its wings. Then it flew S to another tree crossing