It's quite likely too early to tell for sure, but since guessing is fun too, take a stab at this one. This is our only Barred Rock chick, hatched March 21 (3.5 weeks ago). What so you think: hen or roo? My guess is roo.
I'm glad it was just food. I was gonna proffer that perhaps it was just a poop smear, but thought better of it.The "gold leakage" is actually some kind of food smeared on the wing.But I think you're right about the rest.