1001 Space Earth Nature Evolution Fossils and Prehistoric Life Dinosaurs Simple Animals Insects and Spiders Fish Amphibians Reptiles Birds Sea Mammals Land Mammals Plant Kingdom How Plants Live Unusual Plants Ecology Conservation Animal Behaviour Pets and Farm Animals History Human World Science and Technology

Choose a Page:How do birds hunt prey?Which is the most numerous bird?Why do some birds fly away in winter?Which birds live the longest?Which birds are used as symbols?Why do other birds raise cuckoo ch...Which bird sleeps in the air?Why do hummingbirds hum?Why do some birds have bright, sho...How deep can a bird dive?When did the first bird live?*How many types of bird are there?*How fast can an ostrich run? How many types of bird are there? It is thought that there are about 8,700 different species of bird alive today. They are grouped together in orders such as the penguins, herons, and parrots. There are 27 of these orders. A species of penguin, the rockhopper   Previous: Back Book: 1001 Section: Nature Chapter: Birds