~~I didn't think TSC sold mix breeds. I look on their site for the breeds they carry and I can't find anything. So frustrating...
 I just wish I knew. I hate not knowing what breed I have. Don't get me wrong I love all my chickens. I just wish I knew. 
If anyone has any picture of theirs that we could compare that would be great thanks.
		
 
		
	 
They don't sell mixed breeds as such--they sell commercial hybrids. The hybrids are mixes, but planned mixes for certain uses. Kind of like a Labradoodle is a mutt, but a special kind of mutt with a name. Various TSCs order from different hatcheries. They usually use hatcheries that are relatively near the local market. Near us, TSCs get their birds from Mt. Healthy. The birds aren't bred by 
TSC or anything. That means that you'll find different breeds from different hatcheries at different TSCs.
 
Amberlinks, Red Stars, Black Stars, Golden Comets, Golden Buffs, Tetra Tints--these are all hybrids. Some are bred for the backyard chicken keeper market like Tetra Tints, some are usually used by commercial layer houses. They are bred to be calm, low mortality, and lay lots and lots of large eggs with good internal structure (few blood and/or meat spots).
 
Your bird has some Rhode Island Red in its heritage. Other than that, who knows? It's some type of commercial hybrid. And as far as Tetra Tints having black on their beaks--I keep a bunch of these, ordered directly from the hatchery (no mistakes in feed store bins) and none of them have black on their beaks.
 
If you REALLY want to know, call the 
TSC where you bought the birds and ask for the name of the hatchery. Then look on the hatchery website to see which varieties they breed. You should be able to figure it out from there.