Endemic: a species or taxonomic group that is only found in one particular country or geographic area.
Incubated: the act of keeping eggs warm so that development is possible.
Subspecies: a population usually restricted to a geographical area that differs from other populations of the same species, but not to the extent of being classified as a separate species.
Darwin, C.R. (1845) Journal of researches into the natural history and geology of the countries visited during the voyage of H.M.S. Beagle round the world, under the Command of Capt. Fitz Roy, R.N. 2nd edition.John Murray, London.