De Benedetti 1964 Cereops Feb 19 Perita Suarez, Ister Espanola, Galapagos one bird which had been standing alone on a ledge with head up and forward, bill open, for several minutes. opened bill moved neck forward and down & lowered 2-3 times and regurgitated a mass of fibrous tan colored food 1/2" in dia. (foot) on the bare rock, which was then left alone the carapal dropped on the bow movements The bird assumed a rest position shortly after this. These were the only "choke"-like postures seen. Saw one bird alone toss its bill up to slightly beyond its vertebral node in bill closed. Two birds together on a small ledge 6-8 inches apart, one in rest posture other with neck c.1/2 extended mostly up. The latter reached forward and nibbled the feathers over and behind the eye of the former, for 1/2 a second, stopped, then swepted the bill through its scopolus, assumed a rest position, than repeated nibbling on the auriculars. The 2nd bird remained in a rest posture the whole time and finally both moved about going farther apart and staying in rest or slight neck up posture.