Loic Poidevin / Boat moored beside tree in Danube Delta. Reedbed in background. Letea, Romania. May 2018.

Loic Poidevin / Bearded tit (Panurus biarmicus) perched on Reed (Phragmites australis). Danube Delta, Romania. May.

Loic Poidevin / Bearded tit (Panurus biarmicus), two perched on Reed (Phragmites australis). Danube Delta, Romania. May.

Loic Poidevin / Bearded tit (Panurus biarmicus), five perched on Reed (Phragmites australis). Danube Delta, Romania. May.

Mike Read / Drainage ditch and Common reed (Phragmites australis) through Puszta grassland near Tiszaalpar, Kiskunsag National Park, Hungary June 2017

Mike Read / Stacks of harvested Common reed (Phragmites australis) for thatching near Tiszaalpar, Kiskunsag National Park, Hungary, June.

Matthew Maran / Common reed (Phragmites australis) reedbed, Otter Estuary, Devon, England, UK, February.

Matthew Maran / Common reed (Phragmites australis) in flower in reedbed, Otter Estuary, Devon, England, UK, February.

Nick Upton / Common reed (Phragmites australis) seedhead, Somerset Levels, UK, February.

Nick Upton / Common Reed (Phragmites australis) seedheads backlit at sunset, Somerset Levels, UK, February

Nick Upton / Common Reed (Phragmites australis) seedheads backlit at sunset, Somerset Levels, UK, February.

Chris Gomersall / Bearded tit or bearded reedling (Panurus biarmicus) adult male perched on common reed (Phragmites australis). Norfolk, England. February