Well...I have a little chick that had something go wrong in the egg. At first I thought it hatched with one leg missing and since it was from a sibling hatching which is a no no, I thought it was my first genetic mishap. I don't usually breed siblings but this time was to try to see what recessive genes I have in my blues that produced only three babies in silver color...I've read silver looks can be caused by genes besides silver. But closer inspection shows it's whole leg is there, but disappears back into its body at the umbilical cord. I can feel the hard lump of its leg inside its abdomen on that side. For now it's strong and vigorous so I didn't put it down. I'm very uncertain how it'll do over the long run but think I'm going to help it try. It's leg enters the abdomen just barely past the elbow.
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I'm hoping it's leg will shrivel off at the elbow there and it's body will rebsorb or calcify the foot caught inside. I know that's possible...I don't know if it's likely though

. But for now it's healthy and it very much wants to live. I named it Hopalong Cassidy. With all that white fluff it rather reminds me of the fellow who used to play the character.
Wish the little one some much needed good luck, and if anyone has any experience with one legged chickens I'd sure love to hear about them!