P. DeBenedetti 1965 Stercorarius pomarinus 17 June Barrow, Alaska - marker and the East most pole of its areal complex in Barrow Village. The 2 settled on the nest soon after, we left, both otherwise stayed away from us. No special display seen otherwise. 18 June Saw one Copulation and patrol together. In the 1st the male remained mounted for 1-2 minutes but the pair seemed uncoordinated & the vents made contact only twice. Each time the male placed both wing tips on the ground, and after the 3rd time they separated. There were two groups, about 50 ± 30, on the S part of Central Marsh and a group of 15 on Fresh Lake today, and somewhat more territorial birds there yesterday although still below what was found before the last storm period. 19 June No concentration noted today. The nest from June 17 still contains 1 egg according to Hamilton and a second probable sitting I also seen. Watched the 2 of the 17 June nest fly in territorial boundary with a 2nd & the two going back and forth over a 100 foot area, turning in remarkable synchrony and on two occasions appearing to make a brief contact in air. One bird seen in a puddle was playing with what appeared to be an old shirt, picking it up and dropping it in to its water with its beak in quail-like fashion.