DeBenedictis 1962 Plectrophenax nivalis Barrow, Alaska 14 May I Singing in camp. May 1 or 2 other here. 15 May do. Saw one today 16 May do. About 4 P.M. found a flock of about 30±5 feeding on exposed high polygons near S. Salt lagoon. The area they were in was mostly lichen covered, with little grass but much ? willow mixed in. The birds were very shy and flew off when I started towards them from 100 yards away, calling noisily. Disappeared towards the village. 17 May There were at least 4 birds singing in the lab area this evening. Didn't see any females. 18 May Quiet today. Two or 3 birds singing near the lab. Nothing on the tundra 19 May Little change. Still all birds present appear to be males. 20 May At least 4-5 birds in camp. Saw a little fighting behind piketa's lab. 2 Bs, snow-bathing close to each other, kept about 6 feet between themselves, except when one B would posture, a crouch with its wings closed, head down tail up and closed, towards his ollus, calling a low "zzzzzzzt" repeated 2 to 6 times. No song. This whole would then get up and fly at the 2nd, diving at it to within 1/2 foot. The 2nd B would then fly away. This repeated 4 times in c. 3 minutes, when 2nd B left. A 3rd B came in and was ignored.