Holmes, R. 1962 Erolia algina 51. 18 July Barrow, Alaska Pair + 1 young from nest 1 The Bear Ridge - in novel toward Central Marsh. The chick was about < week old. The only other encountered was 1 at Sand end /B, D - at nest #16 - where egg were still present. 19 July - Flocks present in the No. U.P.B. Area - Varying in number from 3-16. Probably total of 50-60 bird wall - no young seen. All those seen were faders, in or near the ponds in shallow water - block mud. Nest #18 near forest area still with 4 eggs. The incubating bird was off the nest when I got to the nest - but was standing nearby - giving no returns - no distraction display. During the 3 hours spent in the meat area - an aerial trial was heard once, but was given in a feeble way. The RB seems to be the only species which uses its trill as an aggressive note beyond the period of territorial defense. It is often given when the bird is startled or disturbed - with no other preliminary notes. The trill at the time of the season, however, is weaker and more variable in pitch than a full-bodied resonant trill during