Cuckoo clock working no 5

This cuckoo clock is running, the cuckoo comes out and whistles and the gong also moves but there is no back door. I have not tested it for accuracy but it rand until the weights touched the floor.

The bird part at the top is not complete and it comes only with the chains and pudendum... hope its the correct one but it did the job

been in storage so a clean would be an idea. height with the bird 27cm width 17cm