- Many large gulls including [[Yellow-legged Gull]], [[Caspian Gull]], [[Lesser Black-backed Gull]]. It commonly hybridises with many of these. [[Common Gull]] / [[Shor [[Image:8242605-2287fg Immature Ring-billed Gull.jpg|thumb|350px|right|Immature (first cycle) American Herring Gull,'' L. a. smi7 KB (1,014 words) - 16:19, 27 May 2023