Ed Carson: 1968 White-throated Storm Petrel (2) McKean Island 17 Oct. Beaveraw; all desirable rock sites taken. Since I mainly looked under beaveraw at that time, it being easier than tearing rock piles apart. Just much question that there were many more breeding birds here in july. The amount of beaveraw always I have turned over so far yielded at least 10 nest sites, in july as compared gle to 1 now. 19 Oct. One adult calling from an wrecked empty nest cavity, an NW corner, in rock pile. 24 Oct. Have about given up finding many or even any more nest of this species. No question, that they are at an all time low as far as number of breeding birds are concerned. I have yet rie to see or catch any adults of the very young. If the one dog + I saw in july coming in at mid day is any indication of the odd-ball birds they come in to feed young, then I have little chance of catching the parents to nestling #4. The parents probably come in singly at old time, feed the young & quickly depart. I don't have any evidence of the parents staying with the young after they are about small down age. 27 Oct. Banded an adult in empty nest cavity just SE camp, BP bay, just 20 ft from rest 4. Attracted to bird by hearing the typical gorror, gorrer call. Summary: Told 2 adults banded and 3 nestlings. During the last trip. At least 5 empty nests were found with birds in them, plus the 3 nestlings, and one nest with egg making about 9 nests. Thus about 55% of the birds on the island may be Ed Carson: 1968 White-throated Storm Petrel (3) McKean Island get attempting to nest: 33% Lave young and 11% had incubated eggs. These percentages, in my crude survey the entire sample is too small. Thus both the White-throated Storm Petrel and Anderson's Gannetwater, are at an all time nesting low, while the beaveraw Petrels are and many other species nestling. Since these three species utilize many of the same nest sites or types of nest sites — this difference in nesting during different times probably affords all three species nesting sites which would not be available if all nested at one time, the Gannetwater and White-thrse, especially are co-occurring nesting each other during peak nesting ceams. Food availability in the nebly seems probably also dictates this displacement.