Hi - brand new chick owner & BYC user here, this is my first post. We have our first batch of chicks, living in a brooder in a bathtub for now. Chicks are 2 weeks old, no health concerns so far. Our Wellsumer chick has this - thing - on one of her legs. I didn't notice anything earlier, we've been handling them a few times a day. It seems like a whitish bump, not symmetrical. SEE PHOTO BELOW This chick is big, eating & pooping & all the rest. She doesn't limp or seem to pay any attention to this. Carefully checked all over all 6 of our chicks - nothing. The only thing similar I've found here is avian/poultry pox - growths on nonfeathered areas like legs. Really hope it's not that. Any thoughts or advice VERY much appreciated - thank you!!