Larus hyperboeaes May 29 Point Barrow, Alaska left the group of gulls so they moved off. Thus we see a persistent intolerance of gulls by the owl, which may actively initiate the fray. The desired appears to stem from a competition between the two species for the lemming. It is noted that the snowy owl often kills lemmings that for one reason or another it does not eat. These discarded, misplaced, or lost dead lemmings may serve as an important food for the gulls. That gulls catch live lemmings is likely for we frequently found their tracks today at open lemming burrows in the snow, and, particularly, where the snow had receded in patches revealing the extensive and prominent burrows and feeding areas of the lemmings. May 30 Several gulls frequently over the base, sometimes calling from low cloud formations and out of sight. June 1 Fewer gulls than usual over the base, and only 3 seen on the open tundra; more at Tuvuik. The 3 seen were about 1/2 mile S. of the base, standing or walking about on the snow, 2 adults and 1 immature. Farther inland to the south, going about 5 miles, we saw not even fresh tracks.