Ok so I have now confirmed that the buff orpington is female. I caught her laying an egg today. I will continue to wait and see what happens with the autralorp, so far no more crowing, but also no eggs either.
The egg from the buff was wet again today and had what appeared to be a little blood on it. She appears to be fine, she is running around making a racket fighting for grasshoppers, so I hope there is nothing wrong with her.