Today I gave my chickens a posie of herbs for their good health.
They've been out all day scratching around. When they go in tonight there is a surprise for them hanging just near their laying boxes. I have given them dandelion, thyme, mint, lemon balm, parsley and oregano. I found a list of herbs and their uses for chickens here. I have a lot of them in my garden already although some like parsley and oregano are in short supply at this time of year. This way they can self medicate and eat what they need.
They have clean bedding in their nesting box which I have strewn with lavender to keep mites and bugs away.
It is also supposed to reduce stress and increase blood circulation.