Had one hatch early this am and it still has a shriveled up chunk of yolk, hanging off its butt and appears to be attached. Will this fall off or should I remove it. Appears to be a tiny bit of blood still by its vent. Not bleeding, but I can see it. Also, same baby has at least one curled under toe. Will this straighten out or should I intervene. Then what should be done? Thanks for your input.