This baby Cuckoo was being raised by a pair of Reed Warblers at the side of a lake in Lincolnshire. It was exhausting to watch the little Warblers working their socks off to feed this monster bird they thought they had given birth to in their nest, returning on average every minute during the four hour period that I had the privilege of watching them. My thanks to Tom Robinson of Wildlife Photography Hides for providing this truly magical opportunity.