German-made 2 bird singing bird automaton

Here is a vintage 2-bird singing bird automaton made in Germany.

From the eBay description:

It stands approx 10" tall and the base is 6" across....When wound the birds move as they should (1 moves up and down, moves his tail and his beak moves, the others tail and beak moves)....HOWEVER they are not chirping....I understand that the bellows will need replaced and from research its a fairly easy task if you know what you are doing but I dont !...........Other than no chirping it is in very nice condition...Has a 3 position switch on the bottom as shown.

Here the eBay listing for this German-made 2 bird singing bird automaton

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