Atlantic Yellow-legged Gull (atlantis)

(last update: October 12, 2011)

Atlantic YLG (atlantis) 1cy, September 17 2012, Praia da Rib Grande - São Miguel, Azores Islands. Picture: António Gonçalves.

Typically, Azores birds show extensive black in the tail, a feature shared with graellsii, contrary nominate michahellis from the Mediterranean.
All tertials or coverts still juvenile.