"Mum's been gone for ever so long
and we ain't 'ad nuffin' to eat.
Our big brother's eaten up all of the worms
that she brought back for us as a treat!

I'm older than him, 'cos I saw him hatch out -
but it didn't take long 'till I started to doubt,
'cos after a day or two (possibly three)
the bugger had doubled in size over me!

Who is this bloody great brother of ours -
he don't look like me or like you?
Why does he eat all the food in the nest?
And why does he just say ... Cuckoo?"