Endemic Birds refer to a minority of the World's species which have small, restricted ranges, being confined to a particular area.
Endemic Bird Area refers to regions of the world where the distributions of two or more of these restricted-range species overlap. These regions of overlap, which are relatively rich in endemic bird species compared to other parts of the world, are called Endemic Bird Areas (EBAs).
Following is China Endemic Bird Area Distribution Map. We made this map just help you find out the relations between different endemic bird areas in China because we all know that it is not possible to have a clear border line between different endemic bird areas.