| Breeding | TransitionNon-breedingImmatureClose-ups |   
 

  
   Heermann's Gull
   Larus heermanni
 Newport, California
 19 Jul 2014
  
 by John Crawley
 ©John Crawley
   Heermann's Gull
   Larus heermanni
 Laguna Beach
 Orange County, CA
 20 Jan 2013
  
 by Kendall Brown
 ©Kendall W. Brown

 Breeding adult on the left and an immature individual on the right

   Heermann's Gull
   Larus heermanni
 Breeding Adult & Immature
 Laguna Beach, California
 2 May 2010
  
 by Eric Jeffords
 ©Eric Jeffords

 

 Heermann's Gull
 Larus heermanni

 Breeding plumage
 Cabrillo Beach, California
 6 Apr 1998

 by Margaret T. Sanchez
 ©Margaret T. Sanchez