We have two types of anti bird netting,one is economy anti bird netting and the other is heavy-duty anti bird netting. Both are flexible and manufactured by extruded polyethylene netting. The economy anti bird netting is light in weight and the best selection for protecting medium sizes of birds, such as sparrows. While the heavy-duty anti bird netting is of superior quality, with its extra heavy-duty and high density, this anti bird netting ensures protection against all types of pigeon and similar sized birds, while allows snow to fall through when used as a Fruit Cage roof netting.