I imagine you are disappointed that the prospect of new companions for Henry is dashed. As well as infuriated by a person who would knowingly move on sick birds.I went to see the two Light Sussex hens. The cretin that owns them got three during lockdown so they didn't run out of eggs. A sad but familier story. One has already died and the two I saw will be following shortly.
They were sick and the person who owns them knows they are sick and is trying to avoid the responsiblilty of dealing with them. Disgusting really. I came away very angry. In other circumstances I would have taken them but it looked like Mycoplasma and I couldn't take the risk of it being passed on to Henry, Fret and Carbon.
I explained to the owner what I thought the problem is and how best to go about looking after them. I mentioned the vet word and the money word in one sentance and judging from the way the owner recoiled at both I doubt the poor creatures are going to benefit from either. It was hard just to walk away without doing the owner an injury.