These juvenile Baltic Gulls (Larus fuscus),
were photographed Detlef Gruber:
1) "These two images depict the same individual. It
is a juvenile Baltic Gull photographed at Hannover, Germany in
October and it moulted a single 1st winter scap. Notice the very
dark coloration and the lack of internal markings; compare it
to graellsii."
2) "A classical fuscus (October/Hannover) both in
coloration and structural characters in comparison to michahellis.
Typical juvenile fuscus show rather pale underparts in
contrast to warm chocolate brown upperparts. In structure see
the long wing projection (with often six primaries visible beyond
the tertials, whereas michahellis and graellsii
only show five). Furthermore fuscus are rather short-legged,
and note the fine bill shape"
