Wildlife Biology is the observe and study of behaviour of animals. They frequently observe the features of certain wildlife and determine the creatures role in specific ecosystems and/or how they interact with human beings. In addition, they will often perform various experiments to either increase our knowledge about a certain species or see how humans influence the ecosystem in question. Many Wildlife Biologists will eventually specialize into a particular area of study defined by ecosystem or species. Some of these fields include: Entomology, Ornithology, Marine Biology, or Limnology.