Geeze, this doesn't seem to be getting better, does it? I don't know all that much about chickens, but with puppies we would use a small syringe (without needle) to suck mucous out then use an eye dropper to replace fluids (think Gatorade, or with a bird, perhaps Apple Cider Vinegar diluted). With other pet birds, I have used a dilute calcium (Cal-D-Solv) dropped directly into the beak (can't hurt), a bit of yogurt, ACV in their water, and hospital cage with a heating pad underneath it. But I've never done it with chickens. But to my mind, be they mammal or avian, soft heat, hydration, and isolation can't hurt. Good luck!
I've discovered that treating sick hens takes a lot longer than when they are healthy. I've also discovered that I need a much, much better system of water delivery to the coop.
First discovery is that the syringes that I had on hand were to small to work well giving their meds. Also found out they are useless to adminster ivormectin because they squirt even though i've pulled the needles out!
I now have the nipple waterer in the inner run with meds in it, a small glass waterer with plastic bottom in there too with meds. That was the right solution! The Schnitzel was happily drinking from that surrounded by the Ameraucana teenagers. Inside the coop, there is another nipple waterer with meds, and I placed a plastic Chinese food c ontainer on the poop board for the girls that have yet to come down off the roost - Just in case they get thirsty. It is in a place that is clear, and I will check that frequently.
I am thrilled that most of the hens have been dosed by me and are drinking the medications from the waterer, and that the three on the roost have at least been dosed by me.
I love having the Nest cam in the coop. It was a splurge - sort of like everything down there including the chickens... but it allowed me to spot the problem when it began and see the progression.
It's early - just 36 hours into it, 48 at the most, so I am optimistic.
BTW, I am using the ivermectin to treat lice/mites. I hadn't noticed them before, but they are definitely having a fine time on the chooks.
Gatorade is a great idea! I used to have tons of it in the house til my son headed to college. He went from playing soccer to running middle distance - 800 meters. Lots and lots of medals, but even better, a wonderful young man. Not to mention he likes the girls!
I will keep you posted. If you don't want to wade through my novels, I completely understand!
But I have to say, that you guys/gals are the best! Thank you for being there!