Zebra finches are fun and easy to have in your home. They are a pleasure to view and their soft chirping is soothing. Whether you want only one pair to keep you company or you want to be a breeder with many birds, Zebras are a joy. The cage should be large enough to make the birds feel comfortable. Remember, larger is usually better. A cage about 16x16x20 would be fine. Zebras prefer a nest that is enclosed with only a hole for an opening. Wicker baskets can be purchased at most pet stores. These work fine but are hard to clean between clutches.Nesting material should be clean and safe. A variety of materials can be used singly or together. Dried grass works well. Be sure that the grass has not be treated or fertilized. The hen will lay about one egg a day, for 3 to 8 eggs. They will start sitting on the eggs when she is done laying eggs. Both mom and dad help with the incubation but mom does most of it. The eggs should start hatching about 14 days after they start sitting. If after 20 days nothing hatches, remove the eggs for they apparently are not fertile. She will start laying again soon. You do not need to empty the nesting material, just the eggs.