An EBA is formed where the distributions of two or more such restricted-range species overlap.

A secondary EBA comprises the range of only one restricted-range species.

Here is the only range in Colombia of the Tui Parakeet, as a "restricted-range" species in Colombia, about 150 km.

Another notable region of high latent risk for mammals is the island chain of Indonesia and Melanesia, where there are large numbers of restricted-range endemic species.

The following restricted-range species are also found in this EBA:

The Cabanis's or Azure-rumped Tanager (Tangara cabanisi) is probably the most restricted-range species in the region.

Many of these animals are restricted-range species that are only found in the Albertine Rift montane forests ecoregion in Africa.

Many native birds also live here, as well as fifteen restricted-range species.

The following restricted-range species are also found in the region:

Since the mid-19th century at least it has become a restricted-range endemic species.