DeBenedetti 1967 Feb 27 Academy Bay, Isla Santa Cruz, Galapagos. bottom of the wing stroke, although the action looks quite smooth. The difference in flight is very striking to me although I find it almost impossible to state the nature of the difference. The telphs did much less feeding than the gracilis; a couple of times it dropped down on the water, than got up and flew off and Bob Pyle and I spent 2 or 3 minutes watching it gullies in the Oceanis fashion. It hovered low over the water, wings out and tail spread, feet + legs down with only the feet in the water. The bird took food by picking it out of the water, placing only the bill under. It was not as proficient at the gracilis and flycats are only 1-5 seconds (instead of 10-30 seconds) long, and were followed by much longer flights in between. Some of the gracilis were clearly circling while the path of the ""telphs was more erratic. The tail band was very marked, 24 as wide as the black tip, and sometimes appeared slightly divided at the distal end [illegible] but usually more constant. The telphs appeared to be in high plumage while most of the gracilis were in glossy wing and tail molt, appearing very worn. A Sooty gull came out to the boat area while circled and went back. At 1:30 went back to the station. Saw a Sooty gull give the final part of the "long call" in flight, the head [illegible] as in the diagram.