The awful crows circled overhead. At least, they looked like crows when you first looked at them. But when you stared at them for long enough, you started to see strange things. Unnatural things. Real birds don’t stand in the same position for such a long time, without ever moving. And real birds don’t run out of batteries. The robot crows cried unnaturally often, and if their battery was dying, the cried would come out hoarse. Like they had smoked a whole packet of cigarettes in one sitting.