As far as increasing production goes, I've no idea. Perhaps others on this thread with more experience can provide a better answer. I do know that Australorps are already known for being amazing egg layers. Biel eggs are brownish in color, though the hatching eggs I received range from a peachy-brown to an almost mauve color to a deeper salmon-brown. Perhaps the most desirable thing about Bielefelder roosters is the fact that they're so incredibly people-friendly while be tolerant of other roosters, and yet still protective of their girls. And they're big! Really, really big!