(Plates 48-55) P. O. SWANBERG obtained these unique photographs of the littlestudied Arctic Warbler (Phylloscopus borealis) in 1952 in Swedish Lapland which is the north-western outpost in this bird's breeding-range. The typical race, often known as Eversmann's Warbler, nests from there right across N. Asia, being replaced by other forms in Kamchatka, the N. Pacific islands and Alaska (which is in p...
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