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98 THE CONDOR VOL. XI not estimate, the island being too rocky. Scattered thru this colony of pelicans were a good number of Farallone Cormorants' nests with fresh eggs. We spent the day on North Island and returned at dark. We spent the rest of our time on South Island and Middle Island collecting, shooting, and taking notes. We did not consider North Island worth visiting again. Following is a list of birds seen on this trip, with a few notes: Ptych0ramphus aleuticus. Cassin Auklet. -A few were seen on the way down, and several colonies were found on North Island containing nearly full grown young. On the return trip I shot into a flock of fulmars, and to my surprise one of the birds which I shot for a fulmar, proved to be an auklet. They were mast into a compact flock with the auklet in its center. Brachyramphus hyp01eucus. Xantus Murrelet. with a downy young, about two miles from shore. it. PORTION OF COLONY OF CALIPORNIA BR()?VN PELICANS ON SOUTH ISLAND Down at the Coronados I found the same thing. Only two seen--a female Several old nests were found with broken eggs, and two of them contained dead birds, killed probably by the cat which inhabits South Island. Larus 0ccidentalis. Western Gull. Very common; they are very destructive to the colonies of the other birds, eating eggs and small young. They were a great nuisance around camp, as they were so bold that we had to box every- thing that was not canned, or they would make short work of it. In a recent Geographi- cal Magazine I read an inter- esting article about a colony of Brown Pelicans in Florida, in which the writer says that he noticed that theyoung peli- cans in each nest' were of dif- ferent sizes and ages. He could not find any reason for this. I think I can explain The young pelicans and cormorants were of different sizes and ages in one nest. The reason was that when the pelican or comorant laid an egg it had to sit on it to guard it from the gulls which were always on the look-out for a nest left unguarded. In this way the egg was incubated, so consequently the young birds were hatcht on different dates. Sterna f0rsteri. Forster Tern. Several seen on the trip down. Di0medea nigripes. Black-looted Albatross. A bird which I took to be of this species followed us for some time going down. Fulmarus glacialis glupischa. Pacific Fulmar. Many seen on the trip; they were very shy. 0cean0dr0ma. Petrel, sp. ? We observed many petrels, but as we took none we