A propos Fret and Mow, on another thread you wrote this Shad
Having got to a self-sustaining flock, I am in that position and now take the same attitude to illness (because I have to act in loco predatoris, as
@RoyalChick aptly put it) and am facing having to cull, say, 4 of the flock, simply in order to let any broodies do their thing this summer. It's better for the gene pool, as well as for me, if illness takes some out. So while I try to protect the flock from getting ill in the first place, if someone does get ill, my interventions are minimal now. If they get better, like Fret and Mow, they are often stronger with a better immune system than they had before, and if they don't, then they are top of the list for culling when the job can't be put off any longer. Sad but necessary.