Bonnie, This all leads me to wonder whether our dogs could be fooled by "the real thing". We had a pair of orioles nesting in a cherry tree here, and I frequently wondered whether Peanut would go into his "feed me" rountine upon hearing one of the real birds sing. The problem is finding a real oriole that sounded like the one on the clock (which to my ear doesn't even come close to a real singing bird). Makes me wonder what your dogs would do if they heard a real singing mocker? Rick Sussman Warblerick@aol.com