Holmes, R. 1960 Stercorarius pomarinus 23 June Heron Lake, Alaska pair while in located directly south of the warbler's nest near the NW corner of the plot. The aggressive male. The pair is especially noticeable somewhere- over 2 approaches both birds become highly excited & begin dive bombing immediately. The usually drops his feet just before he passes by, so that there hit against my head or hands. He & so not quit. The aggressive, but she will come quite close in her dive. It has gotten to the point now that whenever we come out of the warbler's nest (sometimes other birds) will fly over & start attacking - even though we are 100 yards from the nest. 28 June Wainright, Alaska Birds were seen throughout the trip from Barnes to Wainright. At the site in an area of a little more than 1/2 a square mile (actually about 3/4 sq. mi.) there were approximately 4-5 pairs. Several territorial encounters were