"Atlantic" Yellow-legged Gull Larus michahellis atlantis, This section is now grouped by population:-

Azores:
: a November series of first-cycle birds from the Azores - part 1 - added 03/05/07.
: a November series of first-cycle birds from the Azores - part 2 - added 03/05/07.
: a November series of first-cycle birds from the Azores - part 3 - added 03/05/07.
: a November series of first-cycle birds from the Azores - part 4 - added 03/05/07.
: a November series of presumed second-cycle birds from the Azores - added 03/05/07.
: another series of first-basics and other ages from the Azores in Feb - added 03/30/05
: a series of first-basics and other ages from the Azores in Feb - added 02/19/04
: another series of first-basics and other ages from the Azores in Feb - added 03/02/04

Madeira:
: five juv/first-basics (standing; flying), from Madeira in the Fall/Autumn - added 01/27/01
: five 2nd/3rd-basics ( standing; flying) from Madeira in the Fall/Autumn - added 01/27/01
: three definitive-alternates (standing), from Madeira in Sept
: a fresh definitive-basic (standing), from Madeira in late Oct

Canaries:
A series of first-cycle birds from Lanzarote in August - - added 03/08/07.
A series of second-cycle birds from Lanzarote in August - - added 03/08/07.
A second series of second-cycle birds from Lanzarote in August - - added 03/08/07.
A series of adults and subadults from Lanzarote in August - - added 03/08/07.
: a first-basic and an adult (standing) from the Canary Islands in Dec - added 01/27/01

Portugal:
A series of first-cycle birds from Portugal on various dates - added 03/08/07.
A series of second-cycle birds from Portugal on various dates - added 03/08/07.
: a series of first-basics and other ages from Portugal in late March - added 02/19/04
A series of adults and subadults from Portugal on various dates - added 03/08/07.

Spain - north and northwest Atlantic (ssp. lusitanius) :
Some first-cycle birds from Santander in July - added 03/08/07.