There are so many factors to consider before going for a particular net. One of such things to consider would include the size of the farm or Garden because this would largely determine whether you need a small or bigger shaped netting device.
In addition, the size of the birds is another factor to consider when looking into the idea of bird netting. When you have sets of crops that are close to ground level with little or no trees and bushes around, you are unlikely to have bird issues. However, if you do have bird issues in your Garden or farm, the sizes of the birds whether big or small sized would largely determine whether you are to get small holed bird netting or a large one. The bigger holes netting would be conducive if the number of birds are much and are big in size.
Furthermore, another thing to consider when picking on the idea of netting your garden is bird feeding. If you are the type of Gardener that loves to feed birds in your backyard then you might need to stop or this would attract birds to your garden. Another thing to consider with bird netting is the sizes of nets. Should the nets be larger? Row? E.t.c. these are things to consider with bird netting.