I'm not sure that this is as complex as we are making it here.

If you own a bird and it looks like the one in the listing it is made by Newtone and most likely painted by Daisy Merton.

I am unaware of a Japanese copy of this design.

I am only aware of the Halton Ware copy of the Kooka on the log ashtray which I will post pics of for you tomorrow.

These copies are easy to spot because they look horrible.

Tim