Markus Varesvuo / Garden Warbler (Sylvia borin) on elderberries, Helsinki, Finland, Octo

Markus Varesvuo / Garden Warbler (Sylvia borin) on elderberries, Helsinki, Finland, October

Markus Varesvuo / Garden Warbler (Sylvia borin) feeding on Elderberries, Helsinki Finland October

Markus Varesvuo / Garden Warbler (Sylvia borin) feeding on elderberries. Helsinki, Finland, October

David Tipling / Garden Warbler (Sylvia borin) in song in hedgerow, Norfolk, England, UK, May.

Markus Varesvuo / Garden warbler (Sylvia borin) perched on twig, Uto, Finland, May.

Markus Varesvuo / Garden warbler (Sylvia borin) on rock, Uto, Finland, May.

Markus Varesvuo / Garden warbler (Sylvia borin) perched on twig covered in Willow (Salix sp) pollen causing yellowing of feathers, Uto, Finland, May.

Steve Knell / Garden warbler (Sylvia borin borin) perched near water, Hungary. May.

Cyril Ruoso / Garden Warbler (Sylvia borin) standing in water, France

Chris Gomersall / 2020VISION / Garden warbler (Sylvia borin) adult perched, singing in hedgerow, Paxton Pit reserve, Cambridgeshire, UK, April

Chris Gomersall / 2020VISION / Garden warbler (Sylvia borin) adult perched in hawthorn tree, singing, Paxton Pit reserve, Cambridgeshire, UK, April