J.P. Myers 1974 Journal Estancia Medaland, 35 Km S. of Tucumc6 by road, Pto de Madariaga, Pcia de Bs. Aires, Argentina grid regime more than the more northerly portions of Arrago Chico. Both Tryngite and Pluviali- [illegible] continue to appear in new foraging areas. Oreopelidos & Zonibys, and especially Thinocon- numbers respectively are much less frequently seen, as in Chaetodus fallaxadicus. For distribution see species sighting records. (19.9) Estancia Medaland, Pto de Madariaga, Pcia de Bs. Aires, Argentina 1700 reached the La Manga pond where later evening we found roosting shorebirds (see journal) By evening the morning S/E breeze had shifted to E/N/E and air ceased in adversity. Clouds less than 10% during afternoon but increasing (from SW) in the evening (a large cirrus formation) to 60%. Temperature rose to ~16°C mid-afternoon. When we arrived at about 2 nts to facilitate placing them after dusk. As I unfolded plans a few goldens passed over. IVL at 1715 ±3000 fc. First goldens landed in the roosting site at 1755, and were immediately, dispersed by creaking, louring Vanellus. This pattern continued; however eventually the numbers began to build. 1801 regular flights of goldens began to appear (IVL= ~750 fc). Many were coming in from NW, particularly along the fence which runs from (19.9) at along the N edge of Tower Llano. 1810 IVL = 600. few birds had actually landed in the roost by this time. Some appear to be using Tower Llano swamp. There are many flocks of shorebirds visible in the air. 1815 potential flock of buffle- herd in (15/12) region, just on the W side of the fence. 1816 bird landing in (19.9). A curious feature of the roosting flights this evening is the inordinate amount of cross-crossing of paths of flocks - there seem to be many directions of flight. [1818 - a buffle in (19.9)] Another interesting feature is the # of shorebirds flying very high and always to the south. Often with ducks, swans, other birds, etc. Gadwits, Tringa, peeps, etc. The sun set at 1834. We waited until ~1930 and then walked 2 nts into place, downwind of the roost ~25 m. I then circled around, turned on my headlamp, and tried to speed the birds. In order to do so I had to approach within ~ 5 meters. They rose, flew a few meters across the wind, and then upwind, all avoiding the net. Cheers. Got a good look at a vizenacha returning (19.9) to camp