Maclean 1968 Calidris alpina 1 June A large group of newly arrived redbacks must have hit the Beach Ridge just before I did. Many birds along the stretch of exposed tundra. Frequent descending trills, but no well developed display yet, and birds still associated in small groups. Collected 3 birds. 2 June Not much exposed ground on the Browerville Ridge system. Saw a number of newly arrived birds - one group of 3 very actively chasing and burning calories at an impressive rate over ca. 1/2 km. of patchy exposure. The chase went on at least 15 minutes. 3 June Made a trip through the area - about normal early activity. I worked up → fl ew to gasoline ridge from polygons to North- proceeds into nest cup display in front of us, although no I was in sights. Gave realia - realia note of worked up bird. On Village Ridge a number of birds were trying to get boundaries settled - much chasing and display. Took 3 birds - probably 2♀ and a ♂. 4 June Happened onto a burst of activity at the No. 20 of P's Plot - again, it looked like a group of newly arrived birds beginning