Great article and pictures.
The second part ‘Prevention of external parasites’ is a need to know for everyone with chickens.
I’d prefer prevention over treating and until now I never needed to use Permethrin or any other poison to keep away /destroy lice or mite.
For me its no go to keep songbirds out of the chicken domain so I need to check often, especially in summer.
I do use DE in their sand bath, mixed with sand under the bedding in the nest-boxes, and use it as a paint (with water) to prevent a red mite infestation. The two times I discovered a few lice I could act quickly (cleaning and applying DE afterwards) to get in control again.
The second part ‘Prevention of external parasites’ is a need to know for everyone with chickens.
I’d prefer prevention over treating and until now I never needed to use Permethrin or any other poison to keep away /destroy lice or mite.
For me its no go to keep songbirds out of the chicken domain so I need to check often, especially in summer.
I do use DE in their sand bath, mixed with sand under the bedding in the nest-boxes, and use it as a paint (with water) to prevent a red mite infestation. The two times I discovered a few lice I could act quickly (cleaning and applying DE afterwards) to get in control again.

If I gave you the impression 'that there is no scientific evidence that commercial feed is better than carefully composed feed from pure ingredients', it was unintentional. The intention was just to explain why I don't use it.
And I omitted discussion of organic because I don't use it, and the focus was on what I do do. Organic feed is a topic on which I need to do more research, and then surely deserves an article to itself. Perhaps you would like to write such?