Wildlife photography is a genre of photography concerned with documenting various forms of wildlife in their natural habitat. It is one of the more challenging forms of photography. As well as requiring sound technical skills, such as being able to expose correctly, wildlife photographers generally need good field craft skills. For example, some animals are difficult to approach and thus a knowledge of the animal's behavior is needed in order to be able to predict its actions. Photographing some species may require stalking skills or the use of a hide/blind for concealment.
While wildlife photographs can be taken using basic equipment, successful photography of some types of wildlife requires specialist equipment, such as macro lenses for insects, long focal length lenses for birds and underwater cameras for marine life. However, a great wildlife photograph can also be the result of being in the right place at the right time. Source: Wikipedia
Wildlife observation is the practice of noting the occurrence or abundance of a dead or living animal species at a specific place and time. One example of such an activity is birding. Intrinsic to the process of scientific wildlife observation is the reporting of What (diagnosis of the species), Where (geographical location), When (date and time), Who (details about observer), and Why (reason for observation, or explanations for occurrence). This rubric describes the basic information for an observation to become data about wildlife and to contribute to scientific investigations of distribution, habitat relations, trends, and movement of wildlife species. Source: Wikipedia