SPMya's 1994 Journal Punta Raga D km N of San Clemente del Tuyú by road, Pto de bral la Valla, Pcia. de Buenos Aires, Argentina 28 March (contd) wide, curving out of sight to the S (not as far as it sounds, but it must have been over an inland). By the time we reached this colony, the water was low enough to have reduced to a stream less than 10m wide, leaving an exposed mud flat of 90 m at least. The alignment of the mud flat was significant, I believe, to the spatial dispersion of the birds in this tidal area (as contrasted later to the main mud flat to the N). Of particular interest is the sharp break into the channel, which [illegible] was less than 10m wide. As the tide went out, after a brief period in which a very broad flat was revealed, subsequent outflow altered the position of the tide line little in terms of horizontal bird movement. Episodically, however, at this flat we found a flock of 10* ruddy turnstones, 2 BA Skiff, several Hudsonian godwit, 3 Ch falklandica, ± P. squatarola, 3 Knots, and 10 W Rumps. All these birds (at that time earlier) have approached foraging areas from the E. 1659 - a winter plumage Pombyx! 1709 - to this minute, the birds have not been coming to habitat in large groups - nothing larger than a flock of 6-50 far. And, except for the Knots, all birds are fairly dispersed. Squatarola behaving territorially. 1718 - 2 Whimbrel flew over to E. By 1725 I was struck by the fact that not all birds were feeding continuously. For example, at that time I could see an albatross and a squatarola (separated by several hundred meters) eating. This is out of a "flock" - i.e. three birds visible within 200 m - of less than 30 total. 1732 - the numbers of shorebirds present is still not overwhelming, by now I've seen 2-10 Knot, 20-30 turnstone, 150 - WR, perhaps a bit fewer (than 150) falklandica. 1735 - first American oystercatcher this afternoon. Part of the mud flats here are interspersed with a series of short little half-moon bays defined by the distribution of an emergent vegetation (a 8-12" grass) growing below the high tide line. [illegible] low tide line riff rafts [illegible] Key [illegible] mud flat [illegible] emergent grass main body of H2O Club de Pesa [illegible] channel mentioned above [illegible] [illegible] bay A Key [illegible] Location of "half moon bays" [illegible] E there are flocks of shorebirds in each of the bays. For example, in bay A in the easternmost quarter (area of 75 x 30m) there are 23 Ch falklandica, 60