Though, chickens can’t fly in the air like a bird but they can fly to some extent. The flying capacity of each chicken depends on the chicken it self some can fly up to 4 ft and some can fly up to 10 ft. They can fly only up to few seconds but that can be enough for the chicken to fly past the fencing. And for this reason it is preferred to use a poultry net kit as to restrain the chicken from flying. Just like an electric fence the electric netting also needs an energiser either a batter energiser or a mains energiser. And to hold the netting you also need posts. 

An electric net is made from polywire which is capable of providing the required protection from predators. This ploywire is made into a net with spaces for letting air for the chickens. Normally, these nets are very long and even that length is not sufficient for your farm then you can clip two nets together. The performance of the electric net will not decrease what so ever. It is better preferred to use a mains energiser instead of a battery as these nets are very power hungry and need constant supply of current. For constructing the right electric fence you the right electric net complimented with good posts and a reliable energiser. If you find it difficult to choose the right combination of all these then you can opt for purchasing an electric poultry kit which comes with all the netting material.