R.B. Hamilton 1965 Calidris bairdii June 13 Barrow Alaska - Two birds were observed in the area s of ARL. One was being chased by a larger Brown bird which had a conspicuous wing stripe (probably a Sandpiper) On the ground this larger bird raised the feathers of its back. This bird was the Baird's sandpiper seen to give a ground display to another bird. In this display the breast was lowered, the tail was cocked above the back, and the wings were raised above the back. They were heard to emit a trill that sounded somewhat like a Grasshopper Sparrow. Three birds were seen feeding on the tundra in the area W at Family Bayou. One of these birds was seen giving a ground display similar to the one already described. June 15 One bird was observed flying over the Voth Area. Three birds were observed feeding in the Barrel Area. One bird was observed being chased by a Sandpiper in the air. On the Ground the Sandpiper was followed at about 8 ft. by this bird. The Sandpiper walked with its back feathers ruffled and with the curls compact and bird facing forward. The Baird's seemed to have a normal posture. June 17 One bird was observed feeding in a pool of standing water in T5, Billed Area. June 17 About 3 pairs were observed in the Barrel Area. They were seen often in aerial display. In this display the bird flies with stiff wings (like spotted Sandpiper) and emits several notes. One of these notes is a long trill and another is a low "peers" repeated several times. Several times the birds were seen chasing each other.