They are looking much better today. Most of the bumps are gone with only the larger scabs present, so it must have been fowlpox.
Adding garlic mineral salt to the water helped speed things up a bit I think.
The only thing I saw on any of the chickens' waddle or combs was on my crested cream legbar. she has one bump on the end of her comb but I thought she might have injured it bumping into something.
Maybe Fowlpox might look different on naked necks because of their featherless necks? but those...
I noticed today that all my naked necks have bumps of the same size all over their necks, many of which are scabbed over.
Are they insect bites or fire ants? I do have fire ants in my yard, though I reduced their mounds by quite a bit, but I don't see any visible mounds near the run nor have I...
This is what I did. It's stiff but not stiff enough to prevent sagging in the middle but at least when weight is put on it will not shut the lid down all the way, allowing any with their necks in to keep their heads.