Question

what information is given in the red book data

Answer 1

red book includes Information about endangered and close to extinct species of our world, like panda, etc

Answer 2

The IUCN(International Union for the Conservation of Nature and its Natural Resources) maintains an international list of animals and plants whose continued existence is getting threatened. This list is published in the form of Red Data Book. Each Red Data Book usually deals with a specific group of animals or plants(e.g. reptiles, insects, misses, etc.)
Thanks