Gulls of the World: A Photographic Guide: A Gull Book Review
10,000 Birds
JUNE 5, 2018
Malling Olsen has made his own decisions, based on research (some not available when he was writing his previous book), on which gulls to treat fully, even though they are considered subspecies in current classifications (Steppe, Mongolian, Azores, Baltic, and Kamchatka Gulls). Princeton University Press, 2018. Topography.
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