Update on Wyandotte. On my way home, I stopped by a pet store and picked up some pelleted parrot food (best I could do on short notice-- living in the city, there's just no accessible feed & seed stores, only "pet stores") and some avian liquid vitamins. When I got home, the hen was in some distress-- she had not been eating or pooping much (maybe the tiniest little bit), and I couldn't tell if she'd been drinking much at all. She had stuff all over her beak-- I couldn't tell what it was-- it was dry and kind of hard to scrape off.
She was opening and closing her mouth and no sound was coming out (just exactly what happened to the Brahma that died the other day). My friend arrived and we attempted to get the chicken to drink by dipping our fingers in the water and dribbling on her beak. I cleaned a bunch of gummy stuff off of her beak. Then I took her water container inside, filled it up with fresh clean water, added 3 drops of echinacea tincture, 2 drops of viola tincture, and a squirt of liquid avian vitamins, plus a tiny capful of bragg's organic cider vinegar-- all to her gallon container.
I fed her the parrot pellets squirted with a bit of the vitamins. My husband said she ate and drank (I got busy inside feeding the humans, ya know). Then I filled up a syringe (needleless) with one drop of echinacea tincture, one tiny drop of aloe vera gel and a tiny drop of honey, and filled it with water and I did my best to feed it to her a drop at a time. She went to sleep in her nest box. When I checked her at 9:30, she was still asleep in her nest box, head tucked under wing. This morning, I did not have time to check her, but she was given another syringe full of water, one echinacea tincture drop, one drop of honey and a tiny drop of aloe vera gel.
Also, we got the name of a chicken vet to call today. He's not in Dallas, but maybe he can give us some advice. The manager of the feed & seed never called us back. We'll be calling him again today.