Hi, I'd get some white grow light for fill spectrum winter lights.
Do they have any type of covered run?
I'dreccomend to get an flock feed, I like nutrena. You don't want to give them to much extra fatty treats, chicken store fat around their organs and too much fat causes health issues and death.
Not safe for cats but as long as the cats aren't licking the birds, it's not really an issue. Poor the dust in an old sock and "Bop" them all over with it.
The first attack is always the hardest, I'm sorry.
Since they weren't secured on your property, you may or may not be able to ask for anything except payment of the birds, about $30 each. Remember to stay calm, kind and reasonable.
It needed to be removed, but it usually don't require cutting, per se but it's like a zit.
https://www.backyardchickens.com/articles/treating-bumblefoot-a-simple-surgical-approach.75146/
That's a lot of white for a female barring. Properly bred barred Plymouth rocks, are odd to be sold straight run because it should be obvious at hatch what the gender is.
They're not fussy, they're spoiled. they know there's tasty junk good available if they don't want to eat their healthy dinner. Cut out scratch completely, they'll eat their food when hungry enough.
Side bar, unless the scratch and corn are also organic, you're wasting your money because in...
Acv won't help anything, especially in municipal water.
Are you mixing the scratch in the feed?
They need to get less than a spoonful per hen, once or twice a week.
Sorry you lost your birds.
Too much treats such as scratch can cause laying issues. They're mainly fat and carbs, chicken don't retain fat on the outside like we do, it build internally, around the the organs. Making life in general harder and usual shorter but it definitely makes laying...