Maclean 1968 (14) Aphriza virgata (25 May) Heard a surfbird alarm note, and watched closely to see that neither of these birds moved bill. Looked up slope and saw 2 more surfbirds ca. 70 m. away. These, I think, were the original 2; they had passed directly over the other 2 without eliciting any perceptible response. Sat for > 1/2 hour with all 4 birds in sight within 60 m. - closely associating in pairs. In this time there was no interaction except that the lower pair stopped feeding and became attentive when 1 bird of the upper pair gave the alarm note softly. After 40 min. I decided to intervene. I walked down the slope and drove the upper pair toward the lower pair. They moved to within ca. 40 m., then flew directly over the others and circled toward the NW slope. The others merely 'sucked' when this pair flew over. So twice one pair flew over the other without eliciting any aggressive response. Looks like more evidence for lack of territoriality, or, at least, these birds were acting as pairs but not as if on territories. When flushed one bird of each of these pairs gave je-jew note. The uphill pair did it while passing near the downhill bird, but I think it related to being flushed, not to the