JPMyers 1974 Tryngitea subruficollis Tower Harnos, Estancia Medeland, 35 km S. S. Juancho by road, Pto de Madariaga, Pcia de Buenos Aires, Argentina 26 February (cont'd) Jalo #. Seconds since last. Stepmains last. 2/26A' 1 EAT 1 13 39 2 1 3 3 - - 4 1 1 EAT 5 3 6 6 - - 7 14 10 8 3 9 9 - - EAT 10 25 7#5 11 18 64 EAT 12 3 5 13 9 23 74 SUPPLANT 2/26A' flew twice at an intruder in order to supplant, 'clunking' prior to flight. 0856-2126A supplied again. It had been feeding along the edge of the drainage area, well away from other buffy. Flew ~25-30m to supplant, while doing that it ignored another buffy which had also intruded. But then returned in order to supplant. The second intruder did not fly, but rather ran in front of 2/26A' for over 30m. Between 0730 and 0959 Lois followed 11 buffy, picking them up as they came onto the grid. Average tenure on the grid (in the grid itself, not necessarily how long she was able to follow it after off the grid) was 5.7 minutes (N=15; some birds went off & returned). MAX=23, min=2min. See Grid 10 book pp 51-56.