Pluvialis dominica Y. DeBenedictis 1965 17 June Barrow, Alaska (cont), from birds in flight. Saw an aerial chase between 2 black-faced birds and a few ground chases but no other display activity. 18 June One seen on the Beach Ridge. 19 June There were more birds in the Both-Bither's area than last time, and saw 1 aerial displays. The wind flies west a slowish, stiff, straight out wing beat, calls: "ku tee" or "kun lee" or "teelee" or "tulee", the beat about 4 per 3 seconds and the calls synchronous with the wing beat. The display is carried out 20-30 feet up and lasts 10-15 seconds. There were at least 2 % and didn't any black-faced birds together. Bird was hard to approach. 20 June Saw 3 flight displays as described above. Heard again a very complicated vocalization - "Something like "too wee wihwit wit teeloo" -- -- -- or longer, but have been unable to note the context in which it is given. Not all birds present seem to be paired. 21 June Only 3-4 birds in the area where 10+ were seen yesterday, and no special behavior observed. 22 June Heard the long vocalization and believe chase was involved but couldn't be sure due to fog. No flight display. 23 June Birds seen in the afternoon were quiet; all birds.