Fergus Gill / 2020VISION / Wood Warbler (Phylloscopus sibilatrix) singing from an oak tree, Atlantic Oakwoods of Sunart, Scotland, May.

Andy Rouse / 2020VISION / Wood warbler (Phylloscopus sibilatrix) in flight in sesile oak forest, Wales, UK, May. 2020VISION Book Plate.

Andy Rouse / 2020VISION / Wood Warbler (Phylloscopus sibilatrix) singing from stump. Wales, April.

David Noton / Sewage effluent discharge near Severn Bridge construction site

Nick Garbutt / Effluent outflow into the sea just outside Longyearbyen, Spitsbergen, Svalbard, Arctic Norway, June 2009

David Noton / Sewage effluent being discharged into the Severn estuary near Bristol UK