Greyish Willow Warblers

These two individuals were both in sping migration and very distinct among Willow Warblers seen at the time. Birds like these are quite rare in Finland. I do not remember seeing other than these two.

31 May 1996 Hanko bird observatory, south coast, Finland.

May 1992 Lågskär Bird Obsevatory, Åland Islands, Finland.

May 1992 Lågskär Bird Obsevatory, Åland Islands, Finland.

Below some normal spring acredula from Söderskär, Porvoo, Finland Mid-May 2006 and 2007.