J.P. Myers 1974 Journal (1728) Arrayo Chico, Estancia Medaland, 35 km S. of Trancas by road, Pto de Madariaga, Provincia de Buenos Aires Argentina 17 November (cont'd) micro-habitat data book) See WR spp. acct for a description of events on the court, and also the % time bird calculation book, # determination #3. In brief, the dispersing male prevalent on the court was unsettled - a [illegible] majority of the birds did not have territories, but a % of these birds did at times behave as if they were established- anywhere. One bird held a well-established territory, which it supplemented fairly consis- tently, although with occasional lapses. Supplementation were of an obvious S-S nature. At various times other birds were consistent about other areas, indeed they began contesting boundaries with 11-17-74 A. The number of such birds increased toward the end of the sample period, reaching a total (including 11-17-74 A) of 4 territorial birds. Censuses were made every 10 minutes from 0830-1110, 17 in total. There were an average of 15.5 fuscillitis/sample. During the final 10 censuses I noted the % of birds present which were behaving in a space specific fashion. This averaged 16%. Area of the unit was 900 m², being 15 x 60 m. Because of the state of flux in the WR system, I decided to postpone measuring habitat variables until I could calculate % TB on a subsequent morning in order to look for change. By the end of the observation period (1110) cloud cover reduced considerably, to under 30%, but the N wind continued at a moderate intensity. Tower Clamos, Estancia Medaland, Pto de Madariaga, Provincia de Bs. Aires Mid afternoon (~1545) we came to Tower Clamos in order to take baffle microhabitat data and then during the evening, count roosting flights. Birds during the first hour were extremely spotty, however by 1630 we found a group of Tolerant Trygites and got a good series of data. It looked as if there were some territorial buffets established in the (12,15) region, particularly along the edge of the Arrayo (see spp. acct). Then at 1800 we began counting flying birds from the usual (8,11) observation post. See flocking account. Scattered clouds reduced 1V readings during the first 45 minutes but there was a gradual [illegible]