Holmes,R. 1962 Erolia ferruginea 12 June Barrow, Alaska The ? would start out behind the ? - or facing her - but the two birds would walk back & forth in zigzag fashion - sometimes in front, sometimes behind the ? - thereby showing the white rump. She would then fly off - he would follow - sometimes giving the call in flight - both land & feed. No wings - or were seen from landing - [only prior to the ground courtesy & in the courtship display]. No long chasing was seen today - The birds would just fly 50-100 yards at the most - settle & feed. The ? after stood & fed in the hunched posture with scapulars & back feathers raised - head lowered - but not extended forward. Several times he sat into a depression - with tail and pointed wings pointing high - usually he then stood up & walked off - but twice he was seen to stay in the cup for at least 30sec. The tail - being moved from side to side. A copulation ? at least an attempt was noted - when the ? was standing on the back / the ? - with his wings quivering - the two jumped off - into air - flown 10' - began feeding. This took place in the high, block-topped polygon area - No. 1 (the main display area - see map later -) i.e. Uria C. aera nesting copulation attempt