Exploring the Uncharted Bird World
JULY 19, 2018
It divides countries into categories, where the next category has 200 more species. In some cases the data are outdated, e.g. Costa Rica has 900 and not 800 species, but I made no corrections, remaining faithful to the original map data. Shown as a list, it looks like this: Less than 200 bird species: Antarctica; oceanic islands. Hence try the comparison of the species richness not per country – but per square mile.