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Nick Komar | profile | all galleries >> Birds >> Large Gulls >> Mystery Gulls >> Mystery Gull S tree view | thumbnails | slideshow

Mystery Gull S

Pale Thayer's Gull or dark Kumlien's Gull? Photos taken 27 March 2010 in Windsor, Colorado (Weld County) where both species were present (Photos of other gulls present at https://pbase.com/quetzal/gullswindsor03272010). Local status of Thayer's Gull is "rare"; Kumlien's is "very rare". The odds favor Thayer's Gull, but it certainly is intriguing. Comments welcome.

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Thayer's/Kumlien's Gull
Thayer's/Kumlien's Gull		 Thayer's/Kumlien's Gull with adult American Herring Gull
Thayer's/Kumlien's Gull with adult American Herring Gull		 Thayer's/Kumlien's Gull
Thayer's/Kumlien's Gull		 Thayer's/Kumlien's Gull
Thayer's/Kumlien's Gull		 Thayer's/Kumlien's Gull (left) with adult Ring-billed and Thayer's Gulls
Thayer's/Kumlien's Gull (left) with adult Ring-billed and Thayer's Gulls

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