Amoxicillin dose is 57 mg per pound of body weight, twice a day, for 5 - 7 days. If the bird is still acting ill, then antibiotics might be needed. If the bird is acting OK, but passing these kinds of eggs, the a calcium supplement might help get things back to normal. A calcium citrate +D...
Personally I would use the one that is just calcium +D. Interesting that the other identifies what form of calcium but this one does not. One study says that 20 mg of zinc for 5 days in a row in laying hens caused reduction in fertility and hatchability of eggs for almost a month after, so not...
I can't zoom in or see the ingredient label. Any calcium will work, calcium citrate is easier absorbed than other forms and the vitamin D helps that also. But if that's what you have, use it (Citracal is what I keep on hand). Even tums can help in an emergency. I usually just put it in the...
I see runny droppings and what looks like egg white material. I would do as @ChickNanny13 suggested, clean her up good, see what it looks like after that. It doesn't appear to be vent gleet to me, but see how she looks after a good clean up.
Looks like a malformed, soft shelled egg. I don't see any lash material. May just be a glitch, or if it continues could indicate a larger problem. I would give her a calcium citrate + D once a day, see if that firms up the shell. It will also help with contractions and help her pass any more...