Australian Langshans I think you will only find in Australia. They came about because some breeders of (Croad) Langshans felt they had to bring in some fresh blood to save the Croad Langshans from total extinction, so they crossed in some Australorps, and it worked quite well. They managed to get a nice bird with good colors, reasonable egg and meat quality, but, somehow, they lost that special Langshan-type. This is something I dont quite understand, as Australorps was was used in the "mix" when they re-created the extinct bantam-Croad in the 1970's, and they (the really good ones) look just like small Langshans. An Australian Breeder, Tony McKenna, seems to have done a lot of work with the Australian Langshan, and he has a few good films on Youtube. Just go to Youtube, and type in "Croad Langshan" in the searchbox. He is also a member of the Croad Langshan Club.
Yes well then it looks like I'm the only one here with them as I'm the only one in Australia. I shall have a look at those clips they sound interesting.