A monograph on this curious and little known seabird, which sprang to prominence with the recent first record for the Western Palearctic at Lundy Island. Found along the northern Pacific coast, it breeds in burrows, sings in treetops and rears its young entirely at sea. The text covers the history, distribution, status and breeding habitat / behavior of the species, before describing in detail research work on its behavior, breeding, population dynamics and conservation. Illustrations by Ian JONES. Dust jacket.