First of all, the Audouin's Gull; restricted in the Aegean Sea,
this gull is found in uninhabited islets with a population of no
more than 700 pairs (latest censuses claim that its numbers are
even lower). Threatened by depletion of fish stocks, disturbance
and competition by Yellow-legged. Mediterranean Gulls are quite
common in several coastal sites of Northern Greece, forming
large colonies. They are also threatened by disturbance at their
nesting sites. Slender-billed Gulls are found in scattered
colonies of northern and western Greece. Particularly common in
the Messolonghi lagoons.