Yeah as said they're black racers. And don't worry about the biting. Snakes this size can't even break skin. Just wanted to add that as far as feeding you should wait until they shed (should take 3-4 days after hatch) then offer crickets, skinks, and small anole lizards. Some won't take crix off the bat and will need to eat skinks for a while. Eventually they'll all take crickets but I don't think the nutrition is really enough for them so I'd offer the occasional vertebrate as well. They can be switched to pinks but it can take some work with scenting and you must be very careful only to offer the tiniest day old pinks. Offer one of these a pink that's too big and it can kill the snake. They'll sometimes eat stuff that's too big for them. And they can't handle the same size of pinks as a corn would. Stick to 100% body thickness and don't go over or it's dangerous.
another note... lizards can seriously injure a baby snake so it's a good idea to either offer it to the snake head end or hold the head while snake swallows it. Unless the skinks you're offering are very small and can't get in much of a bite.
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