I'm so sorry! Argh!
All right got cheerio, can you offer her watermelon and raw yolk, see if that will entice her. Also try some freshly cooked ground beef, maybe a tablespoon or so.
I haven't read that about liquid poop. But I would hold off on antibiotics, esp since she doesn't have injuries. I would keep the injured hens separated, the wounded one will need to be kept away until she's solidly healed, probably a month or more.
Hello! You're doing great! Clean the wounds and keep them covered. They're good to become a greasy mess but it will all get fixed up when she's able to dust baths.
For Tammy I'd offer some plain Gatorade or electrolytes if you have them and keep her in a semi darkened room. Look her over...
You should look into square foot gardening. It's companion planting to the nth degree. Maximizing harvest by interplanting herbs with fruiting plants , and by doing that reducing weed pressure and watering. Check out gardenary on YouTube.
Its good that it doesn't smell. It could be a mating injury. See how it heals over the next couple of days. You may need to soften the scab with compresses so that it heals well. Do you have a beeswax cream at all?
Go for it! I don't know dosage for ducks, for chickens it's 250 mg twice a day for 7 to 10 days. You'll want offer yogurt with live cultures during the treatment to restore gut flora.
They aren't the best mothers. They're originally from countries in Africa where it's never damp, if you get heavy dew the keets will get chilled because she'll probably take them out into it.