Stercorarius longicaudus Barrow Alaska June 21 A bird of this species was observed sitting on the ground in the N part of Britton's Area. It rested about 15 ft. from a Pomarine Jaeger but no interaction was observed. The bird was noticeably smaller than the Pomarine Jaeger and the coloration was different. The back is a darker color and the belly is white. The legs have a slight bluish tinge. After several minutes the bird flew. It flew over several pairs without being bothered. As it flew the long tail seemed to bob up and down. June 23. A bird was again observed in the N part of the Britton Area. June 24 A bird was observed flying over the Birkel Area. It carried a Lemming and finally managed to swallow it in flight. It seemed to be flying higher than Pomarine Jaegers usually do. June 26 A single bird was observed flying over the N part of the Britton Area. It was chased slowly by a Pomarine Jaeger but the Pomarine Jaeger did not scream and did not seem to be fully motivated in the defence of its territory. June 27 At least seven birds were seen. They are scattered about the tundra. June 28 Two were observed in vicinity of lines IX and X. June 29 Seven were observed in the vicinity of lines IX and X. July 1 Three were seen near lines IX and X. July 2 Five were between lines IX and X. July 7 Five were between lines IX and X. Some had tails