J.P. Myers 1974 Journal Grid 15 (0,18) region, Estancia Medaland, 35 Kms. of Juancho by road, Ptdo de Madariaga, Provincia de Bs. Aires, Arg. 21 November (contd) sun rose at 0528, clouds ~10%, light W wind, temp=13° (8°C at dawn), VLC=18.6. Finished subunit 10 at 0700. Grid totals: Tryngito subruficollis 46; Calidris bairdii 3; Limosa haemastica 1; Pluvialis dominica 109; Vanellus chilensis 4; Nothura maculosa 2; Spechyo coninclusa 1. Thus the daily decline in buffle numbers continues, although goldene appear to be maintaining themselves. Buffles now can be found only in subunits 5-10. Interestingly, whereas before they were not using 9 or 10, now these are the most heavily used subunits. Today, as during the last sampling day (10 November) there was considerable supplementary going on as we sampled. Recall that the tower, where we've been working, lies just beyond subunit 8 of Grid 15. Thus it may be reasonable to assume that some of the events occurring on 17b have also been happening on 15. During the rest of the morning we took Tryngito microhabitat data (reaching #51) in the (4,15) region. I also collected a territorial Tryngito (#172). Grid 17b, Tower, (0,18) region, Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Arg. 22 November reached tower at 0630, somewhat later than I had hoped, but slowed by a non-starting car. Birds were on the grid when we arrived, and lights, but quickly adapted to our presence & have no fears that any of them, even the gallinaceae, are in the least bit spooked by us once we get into the blind. We even have territorial Tryngito beneath the 43 cm! Temperature at 0700 when we began sampling (all day at 15 min intervals plus adding more if the birds spooked) was 7°C, 0% clouds, light NW wind. Dawn was at 0527. See Tryngito sp. accent for a running count of grid events. Also see grid 17b data book for dispersion samples, see grid 16-17 following data book for plots of acquisition site and time through. See % TB calculation #5 for a calculation of the % of territorial buffle made between 1000 and 1300. The bulkline Grid totals (calculated for regular sample, i.e. those from the 15 min intervals) Tryngito subruficollis 7.3 (0-17) 35% (419 samples) Pluvialis dominica 3.9 (0-7) 122 (31 samples). Means are somewhat lower today than 20 November, in part because there was a series of