I don’t think he’s a Welsummer. I had one and Pip is right, they’re much brighter and more “red” or orangey copper rather than mahogany and black like this guy. Your guy looks identical to a Barnevelder and Hoover’s (where TSC gets their chicks from) does carry them. This was my guy for comparison.
Hens go broody when you don’t want them to… and won’t go broody when you do. 

