The cuckoo is a pretty bird,
As she sits in the grass.
With her wings by her side
and her head....under them.
And in this position,
She can only say "Twit"!
For who could say cuckoo
with a beak full of feathers?

perhaps to align with another thread I ought to re-write some of the lines:-

And in this position,
She can only say twite.
For who could say cuckoo
With a beak full of feathers