Editorial: Egg-collectors in the 1970's
01 December 1971
Editorials
White-billed Diver Gavia adamsii, Alaska, June 1970 {photo: BryanL. Sage); below, Great Northern Diver G. immer, Iceland, June 1961 {photo: Hermann Schlenker). White-billed differs in its whitish-yellow bill (greyer at base) with straight culmen and angl...
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