In the interests of completeness I’ve finished off the animation of the bird mechanism. All being well you should be able to see how the mechanism is transferred from the cam, via the cam follower and bell crank and on the beak.
I had a weird problem with Edge. If I placed the lower beak under the body so that the edge of the beak was hidden, the entire body and lower beak disappeared in Google Chrome, worked fine in Safari though. Very odd. Anyway, let me know if you can see this animation okay, thanks!