Ring-billed Gull Larus delawarensis

First calendar year

Ring-billed Gull

#RBG101
July 2008
Toronto, Canada
Photographer: Ingeborg van Leeuwen
Comment: Almost in complete juvenile plumage. Only a few scapulars moulted.

Ring-billed Gull (Larus delawarensis) - 2nd year

#RBG103
October 2011
Vancouver, Canada
Photographer: David Wong
Comment: The bird has moulted the scaps and mantle. Note the hollyleaf-pattern on the tertials. This occur in Ring-billed Gulls now and then, but probably not in Mew Gulls.

Ring-billed Gull

#RBG102
December 2008
Hordaland, Norway
Photographer: Frode Falkenberg
Comment: A small and slender bird, probably a female.

Second calendar year

Ring-billed Gull (Larus delawarensis)

#RBG201
April 2010
Cork, Ireland
Photographer: David Wong

Ring-billed Gull

#RBG203
August 2006
Bergen, Norway
Photographer: Frode Falkenberg
Comment: No first generation feathers visible anymore, and it is not long until the bird is in full second winter plumage. Note the bill, extensive black in the tertials, and black spots along the tail.

Ring-billed Gull (Larus delawarensis)

#RBG204
October 2011
British Columbia, Canada
Photographer: David Wong
Comment: All second winter characteristics are here; black subtermnal band on tail, no apical spots on primaries, and a bright (but a bit darker than in adults) eye..

Third calendar year?

Ring-billed Gull

#RBG301
September 2008
Massachusetts, USA
Photographer: Will Sweet

Adult

Ring-billed Gull

#RBG401
February 2008
California, USA
Photographer: Dave Johnson
Comment: A typical adult winter Ring-billed Gull in all respects. Note especially the yellow iris (eye), well marked black ring on the outer half of the bill, thin white edges on the longest scapulars and tertials, and the small white primary apical spots.

LARUS DELAWARENSIS, RING-BILLED GULL, ADULT WINTER.

#RBG402
January 2012
Wicklow, Ireland
Photographer: Stephen Lawlor

LARUS DELAWARENSIS, RING-BILLED GULL, ADULT WINTER.

#RBG403
February 2011
Galway, Ireland
Photographer: Stephen Lawlor

Ring-billed Gull

#RBG404
October 2012
New Jersey, USA
Photographer: Brian Kushner

2012 11 25_0042

#RBG405
November 2012
Gosport, England
Photographer: Michael Southcott

Ring-billed Gull

#RBG406
December 2005
Hordaland, Norway
Photographer: Frode Falkenberg

When commenting on individual pictures, please use the birds ID mentioned beneath each picture. View all pictures of Ring-billed Gulls in the Gulls of the World-pool.

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