Colibri alpina 27 June Pleasle River Coal Flue, 15°02'5"W, 70°29'N. Alaska A bird came in giving the alarm call when I got on the highland polygonal area, which I collected. A 2nd subsp. was in the area. 28 June The birds on the census plot were very active this morning, singing in the air and on the ground. The wing up display given frequently. The birds on the ground much about in concealed parties but would not sit. The pair were on the plot, one on the fleet area on the W part of the plot and one on the flats on a SE part of the plot, with most area of the plot. With I could find their denned part! 29 June A few widely scattered birds heard in upland areas inland from camp. 30 June A bird came on to the census plot from the lake Agassiz region and snuck off as if going to a nest near the 2.5 streak, where I have seen them before. Couldn't find it. Later flushed a bird that acted suspiciously like it came from a nest near the 5.5 semipod nest. Like in June, when they are on the ground they tend to crouch in the grass and run around like mice, occasionally appearing to peck at surface objects. They are almost always in the flat day Eriophorum area. Later saw 3 birds in similar habitat near the Curriculaceae-Cottarica flats but not on them, and never saw them feed, as they gave alarm calls and went into alert postures as soon as I