They are among the largest birds in the world and are classified as ratites, birds that do not fly and do not have a keel on their sternum bone. Other risks are posed as well such as wild pigs, a competition for food, and natural disaster. They provide a very important role in the rain forest because their excrement spreads the seeds of what they've eaten to grow for miles and miles. They will also eat small animals, flowers, and snails. A mated female will lay 3-6 dark green eggs in a shallow scrape. Feb 9, 2017 - Explore Joseph Brooks's board "Aves- Ostrich, Cassowaries, Kiwis & Penguins", followed by 708 people on Pinterest. They are on the endangered species list.