Thayer's Gull (thayeri)

(last update: January 22, 2013)

Figure 2. Known breeding distribution with dates of first records for three Iceland gull taxa to c. 1900.

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.

Known breeding distribution with dates of first records for three Iceland gull taxa to c. 1900: glaucoides ; kumlieni ; thayeri ;
glaucoides or kumlieni (taxon not verified) = ?.
The first most northerly breeding records for L. a. smithsonianus are also shown: O.