Aberrant and presumed hybrid gulls:-

: possible 1st-basic glaucescens x smithsonianus from Texas
: possible 1st-basic smithsonianus x hyperboreus hybrid from Texas
another possible 1st-basic smithsonianus x hyperboreus hybrid from Texas - added 02/10/14 .
: another possible 1st-basic smithsonianus x hyperboreus hybrid from Texas - added 02/23/05
: presumed 2nd-basic smithsonianus x hyperboreus hybrid from Texas - added 01/16/07
: presumed 2nd-basic smithsonianus x hyperboreus hybrid from Washington - added 01/15/00
: a presumed hybrid Franklin's x Bonaparte's - from Texas
: a presumed hybrid Franklin's x Ring-billed Gull - from Texas - added 01/19/03
: a presumed hybrid adult Kelp x Herring Gull - from Texas - added 01/07/05
: leucistic Bonaparte's Gull - Texas
: leucistic Laughing Gull - Texas
: leucistic Franklin's Gull - Texas - added 11/07/02
: leucistic Gray Gull - Chile
: leucistic Ring-billed Gull - Texas
: partly leucistic Ring-billed Gull - Texas - added 02/28/08
: albinistic/leucistic Herring Gull - Texas