MacLea 1964 Erolia bairdi 11 June ( cont.) away, 50 ft. up, rejoined by 1st baird. Continued 50 yds ( to height of ca. 250 ft.) 1, then other dropped off. Both gave aerial display as drifted back towards area where activity began. Laneso ca. 100 yds. apart. Other 2 continues on in direction of chase. Baird and Semi-Pal feeding 2-10 ft. apart - no apparent interaction. 12 June One displaying just West of White- Rump territory. Continues ca. 1 1/2 min. w/ no response from other birds. 13 June Much activity over marsh between Pow Main and Fresh Lake. One chase involves 5 birds. Bird on ground by corner of S-most Pow Blog - giving wing-raised display. Tail slightly up (ca. 30°). Held close side wing up ca. 20 sec, switched. Watched me all the time. Believed displaying to me. Finally joined by another baird, both flew. Several displaying up over E. Fresh Lake Marsh. Saw chases of 2+3 birds. Evening: 1-crest display in drum area. Bird flushed by upside-down table. Did not go back to nest in 25 min.. (Incomplete clutch?) While off nest, displaying bird flew up - raised wing display, then ground display. Tail down and fanned, body horizontal. Held wing up, then straight