Once upon a time there was a very large bird. His name was Bird. Although he had a bad memory it was an easy name for him to remember – children were always pointing at him saying ‘Look at that bird!’ which helped him remember his name when he had forgotten it. But one-day Bird could not fly. He tried, but he could not. He loved to soar high in the sky, loop-the-loop and dive-bomb chickens. He made the chickens envious as they couldn’t fly, and they ran at full pelt towards him in an attempt to get off the ground and chase him away. But to no avail. Mostly the chickens got up to quite a good speed, stirring up great clouds of dust, almost taking off, but crashed into the wire mesh fence at the end of their chicken run, making it bulge, springing them backwards to land with a bump and a squawk. That’s why it was called a chicken run: because the chickens could only run, not fly.