RTH 1963 28 june Barrat Alaska Som chasing was noted within Dr. Folds; One immature chasing 1/18th Dr. Folds - usually one bird giving Dr. jobber note. In afternoon - only 3 hooting duple were heard near the vacant plots - all 3 true seems to be given by one ♂. Once after a chase, a ♂ just flew both over his territory, 5' over the ground - but did not display. Finally he landed without ever displaying - Our type activity is now on the decrease. 29 june - Census plot. Activity was noticeably reduced today. Many of the ♂♂ no longer showed their aggressive nature, few were sitting in sentinel postures or mounts; a few yet performed an aerial hooting display. When Dr. Folds was given it was always directed to a ♀ on the ground - ie the ♂ flew a foot or two above her giving her a whistling sound. The only other calls heard from ♂♂ were ground grounding of a ♂ who had been disturbed or Dr. jobber while in chase. At the end of a chase, the aggressor would return and later begin feeding. No display at this point - when there former were no one