Ed Cressi 1968 White-throated Storm Petrel (2) McKean Island 17 Oct. Boreham: all desirable rock sites, taken. Sites I mainly looked under Boreham's at that time, it being easier than turning rock piles apart. Not much question that there were many more nesting birds here in July. The amount of Boreham's clumps I have turned over so far yielded at least 10 nest sites in July as compared to 1 now. 19 Oct. One adult calling from unmarked empty nest cavity in NW corner, in rock pile. 24 Oct. Have about given up finding many or even any more nests of this species. No question that they are at an all time low as far as numbers of nesting birds are concerned. I have yet to see or catch any adults of the large gorg. If the one boy I saw in July coming in at mid-day is any indication of the old-ball time they come in to feed young, they I have little chance of catching the parents to nesting #4. The parent, 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 56 camp, BP base, just 20 ft from nest. y. Attracted to bird by leaving the typical gorg, gorg call. Summary: Total 10 adults banded and 3 nestlings probably only saw about 10 other birds during the Lantis' stay. At least 5 empty nests were found with birds in them, plus the 3 nestlings and one nest #4 — making about 9 nests. Thus about 55% of the birds on the island may be Ed Cressi 1968 White-throated Storm Petrel (3) Orcas Island (2) get attempting to nest. 33% have young and 11% had incubated eggs. These percentages are very crude since the entire sample is so small. Thus both the White-throated Storm Petrel and Anderson's Storm-petrels, are at an all time nesting low. While the Boreham's Petrels are more in its peak of nesting. Since there have been many of the same nest sites or types of nest sites — this displacement during different times probably affords all three species nesting sites which would not be avoidable if all nested at one time, the Boreham's and White-throats, especially are complementary in their nesting past other during great nesting seasons. Food availability in the nearby ocean probably also dictates this displacement.