Yep I don't know what the difference is (type wise)with NH roo over the Dellies but I'm going to find out next year. I'm raising I hope a NH roo I have plenty of NH hens and Dellie roos but you can't tell the chicks apart so never hatch them together because the eggs look alike too.....so I'm going to try sex links should be good eggers and good fryers and you can tell who is who.....