Ornithology(more about Ornithology) 
          Like other  basic sciences zoology is subdivided into various specialized fields. Some  fields focus on particular animal groups, such as ichthyology (the study of  fishes), ornithology (the study of birds), and entomology (the study of  insects). Others examine certain aspects of how animals are structured, how  they function, or how they are related to one another. These fields include  genetics, anatomy, ecology, behavior, and many others. Evolutionary biology  focuses on the determination of animal origins and relationships and thus  encompasses all of the fields of zoology.
          the study  of birds including living and fossil forms. In Greek language ornis for "bird.".  Professional ornithologists specialize in fields of pure science such as bird,  evolution, ecology, anatomy, and behavior or in applied fields such as wildlife  management and avian veterinary medicine, and they have a number of societies  that publish journals and hold annual meetings in various part of the world.  The American Ornithologists' Union was founded  in 1883, and the first session of the International Ornithological Congress was  held the following year.