Take a strip of fencing and extend it over the wooden part of the top of your fence about 4-5 in. This will create an unstable and nonvisual barrier on which to hop. They will attempt it and it will hit them right about chest high when they try to land...they will then just fall back. They will learn they can no longer hop onto the solid looking boards. Sometimes you can just string a single strand of wire at the same height and it will achieve the same purpose.
This is how I topped all the perimeter gates into my back yard...before this, the birds would just hop to the top of the gate and then over into the front yard.
Dogs can be trained to co-exist with chickens and many, many people have dogs that do this every day for years....I myself have two dogs that I trust implicitly. It takes an intelligent, trainable breed and an alpha leader mentality to achieve this. If you possess neither, its advisable to just keep the chickens confined.
This is how I topped all the perimeter gates into my back yard...before this, the birds would just hop to the top of the gate and then over into the front yard.
Dogs can be trained to co-exist with chickens and many, many people have dogs that do this every day for years....I myself have two dogs that I trust implicitly. It takes an intelligent, trainable breed and an alpha leader mentality to achieve this. If you possess neither, its advisable to just keep the chickens confined.