And cull birds. Cull birds that are sick immediately, cull birds that are physically deformed, cull birds that have gotten too old, and you will have a stronger and stronger flock. I can't read the disease and injury forum, because I really think some people just get chickens so they can doctor them.Don’t over crowd.
Keep warm,
Or keep cool.
Keep dry.
Feed a recognizable/balanced feed as primary.
Free choice water.
Keep safe.
That is basically it.
I keep a flock, birds come in and out of it.