No, if the water is clean. They will most likely just get annoyed.
Mix vinegar water and skin so soft equal portions and spray your chickens
Nope
chickens and roosters
Yes.
No, spray does't make people sick. If you are bitten by an unvaccinated skunk, you need to worry about rabies, but rabies cannot be transmitted by spray. However, the smell might make you vomit.
No. Chickens will go out in the rain and do fine. They don't like to get wet but they will not get sick from it.
No they get sick from eating orange pips and human people's hair.
It all comes out together unless the bird is frightened or sick.
Chickens peck at each other to establish who has dominance over the other. It is called the pecking order. Sick or injured birds offer changes to the established order and their place on the flock hierarchy. The aggression by the other chickens is showing they are moving up at the expense of the weaker bird.
NO!!
Yes, chickens need vet care when they get sick, just like any other animal.
Most free range chickens do not get antibiotics unless they are sick, sick chickens do not get eaten nor are their eggs used for food. Pesticides are only used when there is an infestation of mites in the hen house and then only in the dusting area where the hens go to have sand baths.