A candidate female heuglini:
A large heuglini, most probably a male, comparing in size with an "intermedius":
Another adult intermedius type:
Heavily moulted 2nd winter Baltic Gull:
The next 2 birds of type intermedius look different:
Typical michahellis:
Caspian and YLG together:
Adult Armenian:
Slender-billed Gull, a rare visitor in Crete in winter, just the 5th wintering record!:
Apart the YLG there are some difficult cases of immatures.
YLG:
Possible Caspian 1st winter:
Is that a heuglini?:
Most probably a 2nd winter armenicus:
A strange bird, small as an armenicus, darker of michahellis:
