A Murder of Crows in Waterbury, Internet Reacts A group of crows is called a murder. I don't know what you call it when a metric F--- ton of crows appear in the sky, but that is what happened in Waterbury and thankfully one of those humans were there to document it with their nifty phone. After a video is taken it must be uploaded to the web by the previously mentioned person. If they don't upload the video within 48 hours, they are apprehended by Federal agents, whisked off to a grimy basement and beaten to within an inch of their life. OK, that's not true. But if you've ever seen my Youtube page, it certainly appears that way.