Not to hi-jack the OP's thread, but these are salmon faverolle chicks. Birds with feathered legs have them from hatch. Same with beards and muffs. Plus, OP's bird is clearly something red based, not salmon. I'm sorry but if your birds look like the OP, you definitely don't have Faverolles. Don't take my word for it, a simple google image search will tell you. Okay, hi-jack off....
OP--I agree, you're right to be suspicious. I have to say I'm just not positive on this one. Those huge legs sure look male, but I'd expect to see more comb at this age. Maybe post again in 2 weeks or so and see how things are developing? Of course, if at any time it starts crowing, there's your answernot at that age they don't as I have raised them and have 5 now
It's just hard to tell with that ad. I have to respectfully disagree with Fred, we do have folks in my AO that take in birds like this and keep them until said natural deaths, although probably sans rose petals