Mackean 1967 C. alpina 11 August About 30 birds with 40 pusilla by ponds by reefer row - drum area. Collected 1 - 811 809. these were about the only birds in the area. Head 2 fly over tanglefoot TI, but saw none in Central Marsh or over Beach Ridge. 12 August Scattered groups of birds at Birkirk feeding with pusilla and turnstones. Collected 1 - 811 # 813 - still light fare. Probably was a total of 20 birds in the area - not many - no sign of the large, compact flock there a few days ago. 14 August Walked carefully over Holmes Marsh from U.S.C. & G.S. to Wohlslag Slough. Saw only 1 immature bird in the Marsh itself - standing by a pond edge. Finally found a flock of 45 - almost all adults - feeding actively in the pond at the mouth of Lewellyn's Wier, along Wohlslag Slough. 7 or 8 were probably immature birds. On turnora to the NE, another 10 or so birds, feeding less actively. Went back to weasel for the shotgun. When I returned many birds had moved onto turnora, but were not feeding. 18 remained in the disturbed pond - collected 1 : 811 815. then went up to the turnora and took 2 birds