When I first wrote on this film, I was a bit dismissive (for which, q.v.). I'm still pretty dismissive, but now I have a video clip to back up my dismissiveness!
Actually, the film isn't bad. It's an intriguing way of telling us about these amazing monkeys—it draws in the double audience of naturalists and Shakespeareans, and, I suppose, Shakespearean naturalists—though that sounds a bit like a nudist colony headed by King Lear ("Come, unbutton here . . .").
The clip below will give you a sense of what happens when you take the gnomes, the seals, the sparrows and pigeons, and all the other animated entities out of Romeo and Juliet. What remains is the basic story—with monkeys!
Links: The Film at IMDB.