Sentence:  'If you think <WSD>spadgers</WSD> is easy,' the father said, 'go get yourself a jenny wren. Jenny wrens is 'alf the size of spadgers and they never sit still for one second. Get yourself a jenny wren before you start shootin' yer mouth off about 'ow clever you is.' 
Meaning of the word marked with <WSD> tags:  A sparrow.