True. But by ordering 10, with 90% sexing accuracy there should be 1 roo
I think the accuracy is usually better than that, but they only "guarantee" 90% accuracy.
Would be easier with the kids at two weeks than two months but it sounds like the only way to know is with time.
You can send off a few feathers or a blood sample for DNA sexing. You can often have the results from that in a week or two that way, depending on Post Office speed and lab processing time. (But of course there's the extra cost and bother if you do it that way.)