J.P. Myas 1974 Journal (23,16) Estancia Medaland 35 km S. of Juancho by road, Ptdo de Madariaga, Pcia de Bs. Aires, Argentina and over the rooting area. This site has been described previously. Briefly it consists of a series of parallel habitat strips - grassy old down, shallow marsh, sparsely, marsh, grain fields, which run in a NE-SW direction parallel to the fence (or vice versa). The bird roosting site is described in Judy Heckenberg. Grid 15 (0,18) region Estancia Medaland, Ptdo de Madariaga, Pcia de Bs. Aires, Argentina 8 October 0745 began reading the large scale (ruffy grid) which we placed a week ago in the region previously used 0,18 region. The grid extends parallel to the road, 1 km long and 100 m wide. Each subunit is 100 x 100 m, i.e. 1 hectare: 1 2 3 4 5 6 7 8 9 10 Fence -> 9 has been displaced 50m closer to the road in order to avoid a blind spot caused by a low rise which would obscure the run of 9. Sampling procedure involves driving along the fence (100 m away from running parallel to grid) and stopping at painted fence posts, placed so as to position unit 100 m from the middle of each unit: unit n | | | | 100 m | \__ route of sampling | \/ | marked fence post Sampling is done from a blind on top of the car, at a height of ~2.5 m, with binoculars for 3 min from each sampling point. During today's sample I was pleased to see that the birds paid very little attention to me, remaining to forage and, indeed, to supplement. Within 25m of the car. Finished sampling at 0848 - a long time. totals: Tryngite subbuccalis 187 (0-44); Vanellus cinereus 13 (0-3); Pluvialis dominicus 125 (7-24) Of course density (hectare) can be calculated by dividing by 10. For details see grid 15 data book. (22,17) Estancia Medaland, Ptdo de Madariaga, Pcia de Buenos Aires, Argentina 1700 drive to the area NW from (23,16) where last night I saw a large flock of unidentified birds swimming over as if to roost. It turns out to be a scant 300 m from the 2nd windmill