I hatched some barnyard mix eggs from a local farm a couple of years ago. The last one to hatch was a whopper of a chick and came from a light brown egg. I suspected it was a RIR cockerel and still suspect RIR as part of the mix. This chick stayed large. I even made a post because I was concerned something was wrong with this massive young bird. Well fast forward and much to my surprise it turned out that it's actually a girl! Big Bonnie is full grown now, almost 2 years old and weighs in just over 11lbs. Is there something in the RIR genetics that make for XL birds when crossed?