From the eBay listing:
Offered for sale is a singing bird music box made in Switzerland by Reuge, probably made in the 1980's. The multi-colored bird is in full feather and will sing a beautiful song. This is in perfect working and singing condition, having been recently serviced by a professional restorer. The clock is separate from the bird automaton and does not activate it. The bird plays by pulling out the knob on the right-hand side. It is in very fine condition, mechanically and cosmetically.
Here's the eBay listing for this particular Swiss singing bird music box clock automaton