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posted May 14th, 2010; last edited May 19th, 2010 –– David Sibley

Variation in immature Ring-billed Gulls - April

Updated 19 May 2010 to add McLaughlin reference

Previously I wrote about the variation in immature Ring-billed Gulls in October, using a series of photos from Cape Cod. On 18 April 2010 I devoted a little time (and a granola bar) to watching and photographing immature Ring-billed Gulls in a parking lot in Boston, MA. [...]

May 14th, 2010 | 2 comments
posted December 1st, 2009; last edited April 9th, 2010 –– David Sibley

Variation in immature Ring-billed Gulls

On October 9th, 2005 I was enjoying the view at First Encounter Beach in Eastham, Massachusetts and watching a small flight of seabirds. A flock of gulls began to gather on the beach close to my car and I found myself more and more engrossed in the plumage variation of Ring-billed Gulls. This first photo [...]

December 1st, 2009 | 2 comments