lol... that's usually how they do it...
Any of the Duckwing types, Silver or Gold, or Black Breasted Red are fairly easy to sex as soon as they start feathering in... easiest and simplest thing to know is the hens will never get black feathers in the body... only the boys will...
This is good to know. I'm pretty sure I've got a pair of silver leghorns but now I'm going to look closer in the morning.