J.P. Myers 1974 Tryngite subruficollis 64 Grid 17B, Tower, (1,18) region, Estancia Medaland, 35 Km S. of Tandilia by road, Pto de Mad- ariaga, Provincia de Buenos Aires, Argentina 22 November cont'd The behaviour of this Arrayo bound flock was quite different from that of a typical sparrow. To begin, there were no alarm calls. Indeed, it is hard to see how such a massive, coordinated departure was orchestrated. Second, the birds went up, high, and they began by going directly toward the Arrayo, beginning to whirl only after having gone several hundred m E, and reached an absolute altitude of over 50 m. One buffy remained on the grid, ca 0,12 on a previous site normally used by a ten bird - probably the same. 1444- Buffy came back, a few golden arrived, and a few more buffies coming into 17B directionally, from 16c. 1451- directional flock moving across 16b. Looks as if one is dropping out - going from 9.0 -> 3,2 of 16b. by 1504- scaring supplementing, in usually places. birds are spreading out. Looks as if old pattern may reappear. 1509- 12 buffies flew over, 4 landed in another flock but took off again. Not a single crew up by ten birds. 1517- Things not returning to normal. Directional flock in 16B region - some aggression but is not tremendously S-S. 1522- spook beginning with golden call. everyone flying. 1533 a Vanellus supplanted another Vanellus, in the process spooking grid birds. 1538 more birds continue to return from Arrayo, in fact many. They are coming back as individuals or in groups of 2-3. Many are whiffing (a remarkable display). 1539- flock of 8 courting birds, all whiffing as a flock. 1635 - (0,1-16b) and (B,?) still not returned. other TB's are back, though, particularly by 2,2 and 1,2 stakes. 1641 - TB? (2,0-16b) began helicoptering towards bend in lower left of km. As soon as (3,0-16b) took off, the other bird began running away, not waiting for (2,0-16b) to get close. 1658 - looks like (0,1-16b) so back. - But it has been fours for 10 minutes, not supplementing but even so with fairly exclusive use. at 1658 it showed a beautiful flying up - held for 3-4 seconds, oscillating the tip about 1/sec. 1705- looking more as if morning's territories are still maintained