Every chapter has a different illustration at the beginning of it, including a hand-drawn map. A mummareation is when starlings in huge flocks fly together in the sky and make these incredible shapes and patterns. And there's a picture of one of my favourite birds here, Barnowl. The Barnowl is found nearly all over the world but its numbers have been falling due to farming intensively. But now they're making a dramatic comeback thanks to conservation schemes.