Tomasz Zawadzki/ BIA / Great Reed-Warbler (Acrocephalus arundinaceus) calling, Poland

Brian Bevan / Pair of Reed warblers (Acrocephalus scirpaceus) feeding young at nest, Bedfordshire, England, UK, July.

Bence Mate / Little bittern (Ixobrychus minutus) watching Great warbler (Acrocephalus arundinaceus) with prey, Lake Csaj, Kiskunsagi National Park, Hungary.

Bence Mate / Great reed warbler (Acrocephalus arundinaceus) taking fish from water, Hungary, June.

Bence Mate / Great reed warbler (Acrocephalus arundinaceus) feeding Cuckoo chick (Cuculus canorus) Pusztaszer, Kiskunsagi National Park, Hungary, June.

Markus Varesvuo / Great Reed Warbler (Acrocephalus arundinaceus) singing in reed bed. Estonia. June

Bence Mate / Great reed warbler (Arcocephalus arundinaceus) chick begging for food, with bokeh affect from water, Pusztaszer, Hungary, June.

Bence Mate / Common cuckoo chick (Cuculus canorus) begging for food from Great reed warbler (Acrocephalus arundinaceus) foster parent, Pusztaszer, Kiskunsagi National Park, Hungary

Bence Mate / Great reed warbler (Acrocephalus arundinaceus) taking fish from water, Hungary, June. Winner, Eric Hosking award, 2011 Wildlife Photographer of the Year competition

Wild Wonders of Europe / Wothe / Great reed warbler (Acrocephalus arundinaceus) perched on reed, singing, Eastern Slowakia, Europe, June 2009

Paul Hobson / Sedge warbler (Acrocephalus schoenobaenus) male singing whilst perched on Willow (Salix sp) branch. Sheffield, England, UK. May.

Paul Hobson / Reed warbler (Acrocephalus scirpaceus) vocalising whilst perched amongst reeds in morning light. Sheffield, England, UK. May.