I bought 5 young black hens from a couple about a month ago. I thought they were black australorps (the couple did not know--they bought them as chicks in a bantam bin--they are not bantams by the way--at Tractor Supply). I was planning to breed them to a young australorp roo that I have. I was looking at breeds in the breeds index on BYC and noticed that there is also a black orpington that looks, to me, identical to the black australorp. How can I tell the difference? I just want to know because I don't want to breed them and sell the chicks as something that they might not be. I have these chickens mixed with several other breeds in my hen house, but I think that they are laying a medium-sized (they just started laying about the time that I bought them) light-brown egg. The eggs might even be considered beige in color--nowhere near as dark as the RIR eggs. Thanks so much.