Maclean 1964 Erebia [illegible] bairdi 1 10 June Encountered frequently near AICS and along Beach Ridge (S.). Display flight seen occasionally. One displayed to by a white-rump. Several chased by white rumps. Near sta. 8.0 of So. Gas line trap line - ground display. Two birds - one tail held down, fanneo. Feathers of back ruffled. Wings held away from body and down. Followed other bird ca. 8" below; two went in tight circles (ca. 2ft. dia.), moving - [illegible] ... Continues 30 sec., then displaying bird (presumed ♂) flew 40 ft. away, other (♀?) followed 20 ft. away. Both flew 150 ft. South. 30 sec. later ♀ moves back to original and disappeared. ♂ continues to fly actively 30-50 ft. away. Flushes ♀ off of nest w/ 4 eggs. Nest or side of polygonal mound. Exposed from all sides. Shallow cup, well lined w/ lichen. Eggs green, heavily spotted w/ brown. Pointed end of all eggs towards center of nest. Birds gave very brief distraction display as eggs checked, then flew away. Evening - 1 possible seen in Voth area. 11 June Much activity in Drum area. 1 displaying (aerial) nearly constantly for ca. 10 min. over Δ 200 x 200 x 150 yds.. Chases frequently seen. Group of 4 chasing - same area as 1 before displaying. Chase low over ground. 1 dropped off, others continued. Flew higher. 150 yds.