My Dad's a Birdman by David Almond
In a rainy town in the north of England, there are strange goings-on. Dad is building a pair of wings, eating flies, and feathering his nest. Auntie Doreen is getting cross and making dumplings. Contest barker Mr. Poop is parading the streets shouting louder and louder, and even Mr. Mint, the headmaster, is not quite himself. And watching it all is Lizzie, missing her mam and looking after Dad by letting him follow his newfound whimsy.