D Buechi Jr 1964 Craquers Feb 19 Punta Suarez, Isla Espanola, Calypso. One bird standing with the bill open - beak up when 2nd bird landed 3 ft away. The 1st elevated and thrust forward distinquely, his bowed his head down twice, then chased across the 2nd bird with the wings out + up, bill pointed at 2nd and opened. Bow was: not sure of position of couple. ? Looking. If the threatening bird stands above the bird being chased away (this is not usual) thus the head and neck are pointed down so bill is aimed at threatened bird. The beak but bill open is sometimes preceded by an oblique and seems to bear extreme (typical) form of it - the bird attacking opens the wing when it moves forward, towards another bird, this wing varying from 1/4 to 3/8 open, always up with copals forward (no other possible position ?). The maximum opening of the wings occurs when the attacking bird is nearly in contact with the attacked birds. The wing open smoothly, often for a very short time. Both after an attack and after landing from a short flight th