Reed Warbler feeding Cuckoo

A young Cuckoo (Cuculus canorus) being fed by a Reed Warbler (Acrocephalus scirpaceus) at Cley-Next-The-Sea, Norfolk. It looks as if it could swallow the Reed Warbler whole as it sticks its head in the Cuckoos gaping red beak. I’d only ever seen this behaviour before on natural history programmes but seeing this first hand was even more amazing.
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