sick hens need advice, help update

[wing it]

Sunday
Birds starting to look better.
Breathing less labored, pump breathing almost nonexistent.
Mucus discharge has tapered off, no new blood in mucus.
Eyes on most hens clearing, rooster’s eyes still show some discharge.
All eating better
Changed all bedding in main coop, bleached coop, all feeders, waters.
Monday
No word from Vet yet ( wish I had a real lab)
Marked improvement seen in all birds.
Breathing in all but 3 birds (last to become ill) has improved in last 24 hours.
No mucus from mouth or in eyes. All birds Eyes are looking brighter.
Feathers look much better in all but 4 birds.
Still no illness in any of the bantams. ? Looked at a post here https://www.backyardchickens.com/forum/viewtopic.php?pid=7789000#p7789000
I can see no real reason as to why bantams who have any immunity.
My thought is that in the post above, is that these birds are carries. In my case bantams are from different flocks, from different breeders. Some were hatched here to birds from my flock. The chance that all my bantams had previous exposure and there for an acquired immunity is just about zero. Also none of my birds lf or bantams has ever showed any signs if this illness before. Yet I am seeing no infection among any of the 15+ bantams. Again if anyone has any insight I would welcome any ideas. Something’s I have been thinking about are methods of transmission, possibly differences in metabolism.
Thanks you all for your kind words

Wing it

 

[OvertheHenHouse]

Sounds as though things are going in the right direction - that's great news! As far as the bantams not being symptomatic, I knew of a flock that developed necrotic enteritis and more than half the birds died. Clearly not what your birds have, but the reason I'm sharing is because it was only the dominant birds that got hit with it - the others didn't - and the vet had no explanation why it would only be the dominant birds. Non-dominants were a mix of buff orps, RIRs, silkies, and other banty sized birds I don't remember, so size was not an issue. FWIW - at the very least, here's a bump, and hoping the birds continue to improve!

 

[Erica]

I'm glad they're improving, wing it. Must be a relief.

Wish I could help with knowing why bantams might be okay. Are they all in the same run? If not, it's a good sign as far as transmissibility (it might be easy to control if local separation keeps individuals from contracting it). Or the bantams might just be naturally hardier. Or (sorry to say this) the incubation period for the disease might be longer than the outbreak so far...

Anyway, I'm just glad the birds you have are improving. And I hope the vet results give good info.

Best of luck,
Erica