Drive 1-inch wide wooden stakes 1 to 3 feet into the ground around the blueberry bush with a sledge hammer. The stakes should stand a few inches taller than the bush when installed. Create a circle with the stakes that is a few inches larger than the bush so the bush is fully enclosed with room to grow.
Wrap 1-inch chicken wire around the outside of the stakes, stretching the wire from one stake to the next to complete the enclosure. Secure the wire to the stakes with wire ties, or heavy-duty staples from a staple gun. Use wire cutters as needed to fit the chicken wire around the stakes.
Drape mosquito or bird netting over the wire cage as the berries begin to develop. Allow the bush to bloom and insects to pollinate the flowers before draping the netting. If you use the netting too early, no berries will develop. When the flowers begin to fade and drop from the bush, add the netting to protect the berries from the birds. Remove the netting to harvest the berries.