Scaly legs in chickens are caused by scaly leg mite. This parasite is so small that it is virtually impossible to see. It nestles deep between the scales on the chicken’s legs. Scaly leg mite can easily be transferred to other chickens via the perches and litter.
Besides red mites, feather lice are also common ectoparasites found in chickens. The main difference is that feather lice feed on the protein in chicken feathers, rather than sucking blood.
Read all information you need to know about red mites in chicken. How to treat red mites? But more importantly, how can you prevent red mites?
Worms in chickens are a common problem that is often discovered too late. You cannot see the worms in chicken droppings with the naked eye. The only way to determine with certainty whether your chickens have a worm infection or not is by having a vet examine droppings.