UNIDENTIFIED GULLS - YLGU-like (mich./atlantis):

NOTE: Although I discuss each gull's possible identity using language ranging from tentative to somewhat confident, I regard all identities to be SPECULATIVE unless there is wide (but not necessarily universal - these are gulls, after all!) external support from the gulling community.

ALSO: Many European references (and gull experts) are up-to-date only on the forms of michahellis - found from Gibraltar and southern Atlantic France eastwards to Greece. The forms of atlantis (NW Spain, Portugal, Azores, Madeira, Canary Islands) are less well-known and some populations - e.g. Azorean birds - are VERY different from typical michahellis:- darker, with first-cycle birds being more extensively marked with dark on the contour feathers and tail.