RTH 1964 C. melanotus 3. 11 June Barrow, Alaska Females on P. talkei's plot, 1 to 2 m. north. Three at Barrowford - chased a bairdii furia - ammate apart. - Action was primarily a supplanting one - De PS flying, landing per De PS who unnest-foul flight, followed closely by De PS for 30-40' - De PS Den swooped off to save a hooting call. 12 June A O supported a WR - furia - by landing near it - De WR flying - few feet, landing, De PS following, - finally WR flew off. 13 June 2 O - 18 on N B S P - east 1 gasoline - 20' - following $ , flying - he in attempt to copulate - but neither O succeeded since they interfered with each other's ear time they approached as $, she flew off (may have had a nest - appeared broody). De two males battled for 10 min+ - flying side by side in air - giving partial hooting call - but usually De gurgles - landing on the ground - are assumed as upright slouched posture - De O's a hunched, crouch- posture with head forward close to the ground - De - De bairdii would start at De suspect or volume sever away, but De femine, forward De O - who took flight to a chosen ground. Several 1 flew ground