SP Mycus 1974 Journal (11,1) to (2,14), Estancia Medeland, 35 Km S of Juanico by road, Pto de Madariaga, Pcia de Bs. Aires, Arg., 17 October (cont'd) 3 Pluvialis dominica, 3 Calidris melanotos, & 1 Tringa flavipes, ad 1 Micropalama. Also found 2 Vanellus chilensis nests (see nest account) (22,17) Estancia Medeland, Pto de Madariaga, Pcia de Bs. Aires, Argentina; Arrived at 18:50 day the roosting site which we had webbed the evening of 8 October (see journal that day). I had some trouble gaining entry into the area because of the recent rain, and in fact could not penetrate the Spartina as far as previously possible. Nonetheless the actual roosting area shrank little if any change in surface area covered by 4:0. Placed 3 nets by 16:45-50 I finished the last set of birds began to fly around & over. This was surprisingly late considering the data from @Estancia 8 October (see flocking count). It was also true that only 1 Tringa and a few (2?) melanotos were in this area when I arrived. Sunset at 19:05-0% cloud, no wind. By then goldies were going overwhelmingly mostly towards the (23,16) roost area. No large flocks of peeps ever came in, although WIR and Pictorials did eventually enter. Caught 2 fuscicollis and 6 Pluvialis (see banding schedule), also one small bat, which I released. Streaked Whimbrel like a cormorant? I remained at the roosting site until 22:05, spending the last ~30 min flushing the nets. During the evening several predators came by the roost area— out fox, a possible cat, & Asio flammeus, and Circus cinereus. Returning to camp I found many many roosting shorebirds along the route, including Vanellus, Pluvialis, and peeps (see flocking count) Arroyo Chico (11,14)-(3,24), Estancia Medeland, Pto. de Madariaga, Pcia de Bs. Aires, Argentina 18 October 07:57 Arran reading the linear grid. 0% cloud, temp 8° after a 4° dawn (sun on horizon at 05:33) no wind. Arroyo back to level of ~2 weeks ago, but—the tardo appears to have gone. Total: Calidris fuscicollis 9, Calidris bairdi 2, Limosa haemoptica 2, Pluvialis dominicus 1, Charadrius falcklandii 4, Steganopus tricolor 1, Thinornis himantopus 3, Anas versicolor 3, Anas georgica 5. Oh misery. I counted a total of 23 war while returning down the Arroyo, with one banded wire (Reply A). —real fuscicollis Last night's banding fraise may not be a result, simply, of the birds heavily moved their roost. Rather it would appear that a large % left. 9,18 region, Grid 15, Estancia Medeland, Pto de Madariaga, Pcia de Bs. Aires, Argentina Proceeded from Linear grid to the 9,18 region and immediately began to sample Grid 15 (see journal @ October also 15 October for description of area). Temperature rising rapidly this morning, up to 18°