Here are 3 birds for you that I have chosen to observe and cross. The bielefelder. the blue orpington, and the belgium malines. The english crele orpington might give you some more thought about color as well. Each of these meet your egg and meat specifics. Forget getting hens to weigh 8-10 pounds! Raise turkeys instead. You surely can get some roosters to meet that weight, but most likely, not the hens.
There are mini turkey breeds too, but I have no experience with them.


