June 11 Wainwright, Alaska both as food and shelter than I recall. The troughs of the high center polygons are well clyged but this is usual. Pomarine and Long-tail jaegers are here but not too abundant. Code saw a long-tail actually catch an adult lemming and it was reluctant to leave it when I approached. From the vegetation I would not guess that the population was much higher than 1955 and I understand that there were moderate numbers in 1956. How does this give with the classic picture? Perhaps the complexity, particularly the height of the vegetation, combined with a longer growing season protects them and furnishes food at a rate which allows them to maintain a high population level. Yet predators appear to play a minor role here. There were more snowgeese in 1953 and less jaegers, neither dense enough to be a controlling factor. Do there some other factor involved? If so, what? Intraspecific strife? How can the population be so abundant without apparent suffering of the vegetation?