Patterns and Light:
Ring-billed Gull, Multnomah Co., OR_9b
Patterns and Light:
Ring-billedGull9a
Patterns and Light:
Ring-billedGull9
Patterns and Light:
Ring-billedGull10a
Patterns and Light:
Ring-billedGull10
Patterns and Light:
Ring-billed Gull, Douglas Co., OR_8457(1)
Patterns and Light:
Ring-billed Gull, Douglas Co., OR_8472(1)
Patterns and Light:
Ring-billed Gull, Douglas Co., OR_8475(1)
Patterns and Light:
Ring-billed Gull, Douglas Co., OR_8519(1)