I thought crowing meant rooster, too, but I got suspicious one day and wondered if a hen can make that sound. Go to YouTube and search for "hens crowing." There are a lot of videos of people's egg laying hens crowing. I will post some better pictures later today. This is aggravating because at least 3 of the 4 chickens we bought from a local breeder are or might be roosters when they were all supposed to be pullets. I know it's hard to tell when they are chicks, but a 0-25% rate of accuracy is pretty disappointing.