Ornithology, the branch of zoology that deals with birds. Included in ornithology is the study of all aspects of bird life, such as body structure, how birds learn and behave, and how they find their way when migrating. Ornithologists do research in the evolution, classification, and geography of birds. Most ornithologists work in universities, government agencies, museums, and zoos.
Mockingbird is a bird related to the catbird and thrasher. Its natural song is a series of clear, varied notes, usually repeated several times, but it is named for its ability to imitate the songs of other birds is and even the mewing of cats.
Sharks have been around longer than the dinosaurs. After a few hundred million years, it's humans that might kill them off.