R.A. Hamilton 1965 Calidris Suscicollis June 18 At least 3 of these birds were observed flying over Central Marsh. One was seen to display to a Pied Sandpiper. The display given was similar to the ground display, described yesterday but the tail was not cocked. The Pied Sandpiper retreated when confronted with this display. Aerial displays were seen in which the wings were held elevated about 45° and the "pooiik" note was heard about three times during these displays, when the birds landed after these displays a "Zeee" note was heard and the birds often did a wing up. Once two of this species were observed fighting. They flattened together on the ground about 5 sec. before they separated and went their separate ways. One white-tumped sandpiper was followed by a Pintail. June 19 Birds were seen displaying in the Britton area. The ground display was noted. June 20 What appeared to be one pair of birds were observed in the Britton area. Some interaction was observed between Suscicollis and pusillus. Only 3 birds were seen. The numbers have [illegible] the number of birds in the decreased markedly. June 24 A pair was observed in the Sand at the Britton Area. The male was observed to give the Sharp-Tailed Ground display, while the female flew away. And he flew in a different direction. June 28 Two were observed on Gasline Ridge. 29 Three were observed on Gasline Ridge. 30 Two were observed on Gasline Ridge. July 1 Two were observed on Gasline Ridge.