Fairey only ever made ugly aeroplanes. One day, when no-one was looking, someone from Dassault broke into the Fairey drawing office and sketched out a Mirage, to give Fairey an idea that ugliness wasn't a prerequisite in an aeroplane.
That became the Fairey Delta 2. The only good looking aeroplane ever to come out of that firm, and so obviously a cuckoo chick!