P. De Benedictis 1967 112 Feb 13 Pumper Swan, Espanola (Wood Island), Galapagos. curling circles about in the normal shallow, loose wing beat flight with 3 to 6 other birds, then glides with the wings up at a 30° angle and the bill slightly opened and pointed downward. In a normal flight (glide) the bill points forward, and in a normal glide the wings are held below the horizontal. Saw no other clearly ritualized patterns. Heard the shorter "kreck" call the head on or the "Golden Bear" off Mexico, but uncertain of the circumstances. Have seen 2 birds in a group of 4 displaying as such at once, but most birds do not display when one does. Watched one bird flying about the cliffs for about 5 minutes. When I first saw it it was making repeated passes, along, at 2 spots on the cliff, one a horizontal crevice in which I could see at least 1 Tropicbird, and another spot about 30 yards away where there were several crevices which I couldn't see into. The bird would fly up to the cliff, rise sharply to about 45° and take with the wings as if to stop moving then go back to horizontal and circle out 2-400 yards return and go through the same procedure again. It continued like this for 2-3 minutes then joined a group of 3, later 5, other Tropicbirds and circled out much further, to a 1/4 mile or so, and at least twice went the