What's the "een" in Halloween?
The scientific study of the geographic distribution of animals. See more at biogeography.
the branch of the science of biogeography (q.v.) that is concerned with the geographic distribution of animal species. In addition to mapping the present distribution of species, zoogeographers formulate theories to explain the distribution, based on information about geography, physiography, climate, and geologic history, as well as knowledge of the evolutionary history and relationships of the animals involved.