240. Sterna cantiaca.
THE SANDWICH SEA-TERN.
Make 17" to 18"; 14 oz. Female 16" to 17"; 12 oz. Legs black. Bill black, tip yellow. Feathers of nape prolonged and pointed. Lower parts rosy.— In winter; Black crescent in front of eye. No rosy hue. Coasts of N. Atlantic, Mediterranean, Black and Caspian Seas in summer.— In winter: S. Africa, Red Sea, Persian Gulf, and Sind. Eggs (2.1 x 1.4) buff, marked brown. (B. 1500.)