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Non-acceptable 2cy Baltic Gulls L f fuscus



2cy Baltic Gull L f fuscus A retarded indivdual that would be impossible to identify as a 2cy fuscus in W Europe without a ring.
2cy Baltic Gull L f fuscus Another retarded but 'more fuscus-like' individual. Also photographed as a 3cy, allowing comparison of different generations of feathers.
2cy Baltic Gull L f fuscus A bird with renewed primaries but juvenile secondaries and even one or more rectrices.
2cy Baltic Gull L f fuscus Odd moult patterns do occur, so close examination of all feather tracts is required. This bird combines second generation P1-7 with a largely juvenile arm!
2cy Baltic Gull L f fuscus Two very smart-looking birds. They are very similar to the most advanced 2cy fuscus, except that they still show juvenile primaries.
2cy Baltic Gull L f fuscus A few birds, like this Finnish individual, are extremely difficult to age with complete confidence.
3cy Lesser Black-backed Gull L f intermedius An 'immature-looking' 3cy bird resembling a 2cy fuscus.
2cy Lesser Black-backed Gull L f intermedius An individual with relatively fresh juvenile primaries that very easily could be confused with second generation feathers.
2cy Baltic Gull L f fuscus A probable 2cy fuscus with a 'barred' plumage.
2cy Baltic Gull L f fuscus A pale bird from Finland.
2cy Baltic Gull L f fuscus A similar individual in the Netherlands.
2cy Lesser Black-backed Gull L f intermedius Advanced Heuglin's Gull L heuglini.
2cy Baltic Gull L f fuscus An unidentified pale 'lesser black-backed gull' with a moult pattern matching the most advanced 2cy fuscus.
2cy Lesser Black-backed Gull L f intermedius An extremely advanced 2cy intermedius that may have replaced primaries on the wintering grounds.
2cy Lesser Black-backed Gull L f intermedius This page concludes with two intermedius, illustrating that this taxon may superficially resemble fuscus concerning feather patterns and structure. Note however that an intermedius of known age and origin with 8+ second generation primaries (or any number of renewed primaries for that matter) has never been recorded!
2cy Lesser Black-backed Gull L f intermedius A dark-mantled Norwegian intermedius.



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