Old model: What was it?

I'm racking my brain trying to think of what it was called. I had it when I was a kid. It was an aircraft that looked like one of the egg planes. The difference was that had batteries and was on a wire stand. When you turned it on, the prop spun and the wings flapped...yes, I said FLAPPED!

I remember it being snap together and was molded in grey plastic. That's all I remember. I'd love to find one now that I'm older.