I swore I heard a rooster one day at work. I asked one coworker if she heard it, and she thought she did. Oh, well. A few days later, more of us heard it. We couldn't figure out WHAT it was!!??! This went on for many days, always in the afternoon around three-thiry. One afternoon I happened to have my purse out of the desk drawer I keep it in, when I heard a loud cock-a-doodle-dooing, coming from my purse!! I searched it and found that the rooster we were hearing was a small clock for the visually impaired that had belonged to my mother. It has a button you push that will announce the time, and an alarm. Apparently I had fooled around trying to set it, and it got set to go off at 3:40 p.m., with a previously unknown capability to make a rooster sound!! I left it that way for a long time, as we always knew when it was nearly time to go home - the rooster would crow!! I finally have reset it for the morning.