Astronomy Picture of the Day (APOD) doesn't do pranks, but likes to make little jokes on April 1, usually re-captioning existing images. For example, on April 1, 2003 it reported that a new constellation was surprising star gazers. “The constellation of Ollie the Owl has suddenly started dominating the southern hemisphere.” The picture showed a bird perching on the Tololo All Sky Camera, and APOD admitted that it would have been funnier if the bird hadn't scratched the plastic dome.