1965 Bird Arvey Journal Sept 12. We walk along the south shore at about the point where the sand gives over to the procurrent vegetation. The sun comes out and the day becomes quite warm. Thousands of Western and Least Sandpipers are seen in their usual feeding flocks at the waters edge. No attempt is made to estimate total numbers, or the ratios of Western to Leasts. I have seen no difference other than the morphological criteria for distinguishing these two sandpipers, probably due to inextensive observation. Large, concentrated flocks of these are seen over in the grass running as we approach. They all face into the wind, and many preen. At our approach, many leave, others show nervousness, and most go into a huge stretch of wing and leg as we come nearer, in preparation for flight. This stretch consists of raising up both wings straight overhead, then straight out with first one leg then the other. Pectoral Sandpipers are observed again, as we saw them last week. These are w/yellowlegs, obviously bigger Sandpipers; seen in groups of 2 or maybe 3 and spend more time on the grassy areas away from the water line, although one was seen to go to the water edge and poke around briefly. Also we have identified a Bairds Sandpiper, and Nick believes that their chatter song is distinctive and remembers it from previous studies. Bairds is slightly larger than Westerns, has black legs, scaled back, a fluffy, black streaked breast, and also spends more time away