OMG! I think I have twins in an egg!!!!!
Today is day 7, just candled, and I can distinctly see 2 black dots moving around in different directions, and lots more veining than in others, though for the life of me I can't see the distinct yolks, just lots of shadowing.
HELP! I know it's very unlikely they can hatch themselves, and I have never ever had to help a chick, and have very little faith in my abilities in that department. Obviously, I have two weeks to learn, and they might not even make it that far, but what if they do??? So much for a hassle-free, give-the-eggs-to-co-parents-on-day-18 hatch I had planned...
Oh, and sorry, I am not much help in the lice department, have never had to deal with that, though I do have a spray in my kit which has ivermectin as active ingredient, but no clue if it works well or if it's safe around hatching eggs.
Edited to add - not an expert, or even remember exactly why, but I would probably avoid Frontline with broodies, have some vague memory of some warning about it... (I do use it for my dogs and cat, haven't tried with chickens yet, haven't needed to.)