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Four Bird Studies RedBacked Shrike Corncrake Chaffinches Willow Warbler. Bruno Liljefors Nationalmuseum .tif Artwork Creator Bruno Liljefors Four Bird Studies RedBacked Shrike Corncrake Chaffinches Willow Warbler date Four studies of birds mounted in frame One studie is an oil on wooden panel the others oil on canvas Fyra fgelstudier