Figure 3. Breeding records for three Iceland gull taxa c. 1900-50.
Belongs to the paper:
Hybridization and changes in the distribution of Iceland gulls
(Larus glaucoides/kumlieni/thayeri),
by D. N. Weir, A.C. Kitchener and R. Y. McGowan,
IN: J. Zool., Lond.(2000) 252, 517-530.
Breeding records for three Iceland gull taxa c. 1900-50: glaucoides ; kumlieni ; thayeri ; glaucoides or kumlieni ●; uncertain or disputed records = ?.

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