getting any more roos, are Black Sex Link the only breed that there is a 100% success rate with sexing when they're tiny chicks? I have a roo... and I live in a subdivision... and my kids get VERY attached to chicks VERY quickly. Last year I got what was supposed to be 5 pullets and ended up with 2 cockerels. We had to return one and my kids (and I) were heartbroken over it. I don't want to even risk getting another roo, but I'd like to get a couple more standard pullets. So, is Sex Link the only way to go to be sure?