After a thunderstorm, a flock of rare choughs turns up at Scatterbrook Farm. Keen to seize the opportunity to scare such a rarely sighted bird, Worzel enlists the help of Susan and John. But their plans are soon scuppered as word of the choughs gets around and a group of avid birdwatchers moves in. With the twitchers refusing to leave, can the children come up with a plan to help scare the choughs and save Worzel from embarrassment?