For the fourth fall/winter in a row, I have attempted to identify the number of 
individuals of all the less common gulls in the Duluth harbor by comparing 
photos of each bird. The results are at least 56 Thayer’s Gulls, 12 Iceland 
Gulls, 43 Glaucous Gulls, 9 Great-Black-backed Gulls, 1 Lesser Black-backed 
Gull, 1 Glaucous-winged Gull, and 1 Nelson’s Gull (hybrid Glaucous X Herring 
Gull).
Photos of many of these birds can be seen at www.pbase.com/karlbardon(under 
Duluth/Superior gulls fall/winter 2011-2012).
Many gulls are still being seen in the Duluth harbor- although most Thayer’s 
have long since moved on (only about 8 remaining), the number of Glaucous and 
Great Black-backed Gulls are still increasing and I am still discovering new 
individuals.
Karl Bardon
Duluth, MN

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