I was able to find this website today:
http://gapoultrylab.org/tifton.html
I called and they actually have a lab about 10 miles from my house in Forsyth, but they are only open there on Tuesdays - EXCEPT this Tuesday because of the holiday. Naturally. However the lab in Tifton is open 5 days a week. So I guess I'll be driving to Tifton tomorrow, but that's ok. If I can find out what's going on before I lose every chicken I have then it will be worth it. Also, they don't charge for the testing either.
As far as symptoms go, there really weren't any on all of the ones that died. I just went to check of everybody Saturday morning, and 4 young silkies were dead. I though maybe they had gotten too cold because their little coop didn't have a heat lamp like the other 2 coops have. There was one silkie and one coachin that hadn't died, so I (in my ignorance) put them in one of the other coops so they wouldn't freeze. The next morning the silkie was dead. Then, Monday night I went out to check everyone and the coachin was in the coop, laying in the floor. I though she was dead but when I picked her up she started squirming some but she couldn't move her heat at all. I brought her in and gave her some poly-vi-sol and electrolytes in water via syringe. She is actually still alive but just lays in a basket and only moves when I disturb her to give the vitamins, etc. Well, this morning after tending to her, I went to the coops again (starting to really dread that now) and there lies my black silkie hen, dead as a doornail. She was sitting on eggs with 2 other silkie hens just 2 days ago.
I wormed all of the chickens two weekends ago, but that's the only time I've done that. I have 2 other hens that have have some respiratory thing going on for several weeks now but they are in a different coop. Of course they are still alive. WTH???
Well, if this long saga sounds like something in particular, please let me know. I plan to take the cochin, the dead silkie from this morning and one of the 2 sick hens to the lab tomorrow. Hopefully we will find out something, and that that something is curable.