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Keywords from Image Description:
Willow Warbler Grnvold. en An illustration of Willow Warbler at its nest by Henrik Grnvold org Birds of Great Britain and Ireland Order Passeres vol plate Illustration by Henrik Grnvold in book by Arthur Gardiner Butler PDold Henrik Grnvold Phylloscopus trochilus Birds of Great Britain and Ireland Butler Phylloscopidae nests Phylloscopidae