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) feeding Cuckoo chick (Cuculus canorus) Pusztaszer, Kiskunsagi National Park, Hungary, June.

Jussi Murtosaari / Garden warbler (Sylvia borin), catching flies in willow tree, Korpoo, Uto, Finland, May.

David Tipling / 2020VISION / Reed warbler (Acrocephalus scirpaceus) with twelve day old Cuckoo (Cuculus canorus) chick at nest, Norfolk, England, UK, May

Markus Varesvuo / Goldcrest (Regulus regulus) perched amongst juniper berries, Espoo, Finland, February

Markus Varesvuo / Icterine Warbler (Hippolais icterina) adult perched in a tree. Estonia, Baltics. May.

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

Markus Varesvuo / Lesser Whitethroat (Sylvia curruca) with yellow pollen stain on head from willow catkins. Porvoo, Söderskär, Finland. May

Markus Varesvuo / Arctic Warbler (Phylloscopus borealis) flying to conifer tree. Kuusamo, Finland. June

Markus Varesvuo / Wood Warbler (Phylloscopus sibilatrix), Estonia, May 2005

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