JPMyers 1973 Calidris Melanotos 03 Sept 3 contd 365 Km NW of Villa Hayes by road, Dept Bogeron, Paraguay sandpiper nearby. My collecting urge was too great to make any detailed observation of the birds. Got 2 with one shot. Others flew. The pool was by the road, very long (extended several hundred meters at least but only a meter or 2 wide). Birds were at the end or a small spit of mud. Water really was only inches deep. Vegetation on all but several square meters of mud, when the birds were. @ 200 yds W of Intersection of Canal 2 and Rte 11, by road, Peia de Buenos Aires, Argentina Sept 16 1200 Pectorals mixed in with flock of other SB's. There are at least 10, perhaps as many as 50 pectorals here, but they are feeding on the ground + I can't get a good count as they are too dispersed. Several of them are foraging near 300 several golden plovers. The habitat is what I have been lead to believe so classic - a pampas depression in the midst of a huge grazed field of low grass which continues 5 from the road as far as I can see. Standing water up to 6" depth in the center, but the majority being less than 3" depth + covering grass. The pectorals are along the edges where the grass starts to dip under the water. The birds are feeding "independently" of one another - i.e. There is no coherent flock as I saw yesterday in the Baird's - WR group at Laguna San Lorenzo, ~15 Km W of Castelli by road, Peia de Buenos Aires, Argentina 0800 - I am transcribing today's notes from tape, and inadvertently put the above location before this one, (which temporally was first) 2 Pectorals in a flock of peeps. 3 B10. 3 Pectorals another one in similar flock.