Journal R.E. Johnson 1968 July 4 Amchitka Island, Alaska of the Aleutian Tern colony near Makarius Point. However the 5 nests found in the Aleutian Tern colony at Rifle Range are much more widely spaced. At each of these 3 colonies one hears the voices of both species of tern. At Rifle Range there is little doubt that the Arctic Tern is either absent or greatly outnumbered (20 or 30 to 1) & perhaps the wide spacing may be taken as characteristic of this species. On the other hand the colony of Arctic Terns south of New Camp has closely spaced nests and rarely does one hear an Aleutian Tern here. However the Makarius Pt. Aleutian Tern colony has a mixture of voices & I failed to record on previous visits what these proportions might be. I believe the Aleutian Tern dominates. The 5 nests we had found have all terminated now & few adult birds remain in the area, but 5 birds were seen today & 3 of these were Arctic Terns. This colony had close spacing like the Arctic Tern colony & it is possible that Arctic Terns nesting within this colony resulted in this closer spacing. It is also possible that the spacing at Rifle Range would appear more compact if we searched the area more carefully. However with each visit to the Rifle Range area I have devoted some time to canvassing new portions of the area lying between nests & I have found me