" Some said their wingtips were glossy blue-black, shimmering like the bellies of spiders; others said the white bodies and black markings were a myth, and that the only thing to interrupt their black plumage, dark as the moment after lightning, were their gilded breast feathers that gleamed like coins at last light. For all said that the birds took wing only at sunset. The setting sun was said to call them into the dark. They said the birds never stopped moving. It was agreed that the band of thirty flew west following the night, farther and farther with each day until they circled the planet without ever craning their necks to the east. Few had ever seen them, these birds that were the last of their kind, these birds that encircled the world like an unbroken ribbon. "

― Zeyn Joukhadar , The Thirty Names of Night