Presumed 2cy Larus hyperboreus hybrid

Larus hyperboreus hybrid
2cy Larus hyperboreus hybrid? at Tara dump, SW Finland 11.5.2007. Foto: Hannu Koskinen

Larus hyperboreus hybrid
2cy Larus hyperboreus hybrid? at Tara dump, SW Finland 11.5.2007.
Foto: Hannu Koskinen

Larus hyperboreus hybrid
2cy Larus hyperboreus hybrid? at Tara dump, SW Finland 11.5.2007. Foto: Hannu Koskinen

Larus hyperboreus hybrid
2cy Larus hyperboreus hybrid? at Tara dump, SW Finland 11.5.2007.
The tailband is very broad. Foto: Hannu Koskinen

Larus hyperboreus hybrid
2cy Larus hyperboreus hybrid? at Tara dump, SW Finland 11.5.2007. Undertailcoverts have strong "tiger"-pattern. Foto: Hannu Koskinen

Larus hyperboreus hybrid
2cy Larus hyperboreus hybrid? at Tara dump, SW Finland 11.5.2007. Foto: Hannu Koskinen

Larus hyperboreus hybrid
2cy Larus hyperboreus hybrid? at Tara dump, SW Finland 11.5.2007. Foto: Hannu Koskinen

Larus hyperboreus hybrid
2cy Larus hyperboreus hybrid? at Tara dump, SW Finland 11.5.2007. This Gull is very much like a clean hyperboreus,
but 4 outer primaries and broad tailband have clearly brown. Primaries should be whitish in May. Foto: Hannu Koskinen

Larus hyperboreus hybrid
2cy Larus hyperboreus hybrid? at Tara dump, SW Finland 11.5.2007. Foto: Hannu Koskinen