[Illustration: Fig. 1. A male yellow-billed loon setting on eggs in
nest at Wahoo Lake on July 9, 1952.]
[Illustration: Fig. 2. Nest and eggs shown in figure 1, July 9,
1952. Incubation had just begun.]
[Illustration: Fig. 3. Arctic loon (upper) and red-throated loon
(lower) from Teshekpuk Lake, August 1, 1951.]
[Illustration: Fig. 4. Nest and eggs of white-fronted goose at
Umiat, July 1, 1952. Incubation three fourths completed.]
[Illustration: Fig. 5. Adult male surf scoters, July 16, 1952, at
Porcupine Lake. Scoters are uncommon on the Arctic Slope.]
[Illustration: Fig. 6. Arctic tern shot at Teshekpuk Lake on August
1, 1951. A common breeding bird in northern Alaska.]