Wow, I learn something everyday. It;'s funny how some will be obvious in a few weeks while others will keep you guessing several weeks later. I know you're supposed to be able to tell the sex of delawares at a day old buy comparing wing feathers. I tried this year but I just can't make out the difference.
cubalay, I've got the same issue with my Del rooster. He'll fight though the fence wire at my New Hampshire roo until he bloody's himself up good.