S.P. Piligas 1974 Journal Linear grid Estancia Medland, 35 Km S. of Juvanda, Pto de Madariaga, Provincia de Buenos Aires, Argentina 20 February (Cont'd) B. Headed gull 4.5 (3-6) 9, Speckled teal 1.5 (1-2) 3; Red Shoveler 1 (0-2) 2. After running the grid we drove to the swamp at the east end of Tower Llanos, arriving at ~ 2000. 200t WR, many G + L Ylpg, some Hudsonian gulls, Chardwin falkeandice (including one banded bird, 812028/8), fat one individual at roosts despite a thorough search. Nyctiernphus again common 21 February at subunit 5- grid 12 area by 0545 wl Pardo (Caucau) for setting, Bittern WR. Temp 15 at 0500, heavy overcast appearing in sky after a clear night. No wind, slight rain just before dawn. Flight Driving along the array on the way to the ruffling site we encountered 3 groups of roosting Ch.falkeandice, all with one each in the 3 arrays cents along the main array. Spotlighted one of the players + banded (Left yellow), No WR were on the shore near door day. One Vizcacha seen running into hole by subunit 4. WR arrived at 0849. Banded 9 WR, 1 Ch.falkeandice, and one Hymantopus. First recaptures: 8 Ry Lyg; Ry Lyr; Rg Lr. end of Potrevo beyond linear grid Potrevo, Estancia Medland, Pto de Madariaga, Provincia de Buenos Aires, Argentina Looking for Bordered we drove to the swamp on the potrevo beyond the end of the linear grid, i.e. the land beyond between the 3rd & 4th fences N of farmhouse road : [Hand-drawn sketch with labels: Linear grid, gate, tower, Tower Llanos, gate, swamp being discussed, large swamp, barking swamp, swamp, N, Farmhouse Rd, Anago Chico] There were no pelebals present, though I had found several there 12 February (see journal) However, re-sighted one WR (Rg L0) banded 2/16 in Tower Llanos Swamp. Linear Grid Estancia Medland, Pto de Madariaga, Provincia Bs Aires, Argentina 2000 began running linear grid again. temp 15°, Clouds - 0, wind light SE. totals: White rump 42, Chardwin falkeandice 16, GYlpg 7, BNShtf 3, Southern Lapwing 6, Brown headed gull 7, Neotropical cormorant 1, Speckled teal 3, Rufres banded nigrisito, 1. At 2039 the sun was crossing the horizon, I began sampling