P. De Benedetti's 1964 17 Jan. On board "Golden Bear" off S. Baja Calif. Mex. Flies very stiff-winged and glides a lot. Not much else until the meeting nearly began. The session this A.M. was much more interesting than usual; got away from the biogeography and started discussion of some of the problems of the islands. After the session saw 2 beach Petrels flying along side the boat. Dr. Du later come back and said he had seen Petrels and shearwaters from the bow. Went forward and eventually saw about 15 beach Petrels. They were usually in open groups, 3-5 together, with scattered single birds near by, and the flocks 10-15 minutes apart. One Manx Shearwater from along side; The beach Petrels are mostly clear white rumped [illegible], one with a divided rump patch [illegible] and one with a brown rump [illegible] and shows a tanish bar on the greater secondary coverts. The flight is very light, with deep (9 inches) [illegible] beats + glides with down-beat wings; circle about aloft. I remind me of Cliff Swallows visibly. Almost no zooplankton [illegible] and only 1 or 2 flying fish. After lunch about 10 beach Petrels following the boat, crossing the wake frequently. They feed very infrequently, settling brief[ly] on the water with the wing up [illegible] and sit only for 2-3 seconds. They often come over to investigate but seldom land; usually they do when there are orange peels with -by their throats. Don't eat the peels, but [illegible] be after something attached to the orange peels. When they pass over the coarse coasts