Thayer's Gull (thayeri)
(last update: January 22, 2013)
Figure 1. Breeding records for three Iceland gull taxa c. 1950-95.
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. 1950-95: glaucoides 
; kumlieni 
; thayeri 
. Complete breeding
distributions of all three taxa are still uncertain (= ?), and a few thayeri records are from up to 20 years before 1950.
▼ indicates
the main southward thrust of thick, multi-year accretions of pack ice; o o postulated southern limit to High Arctic.
