Which bird, historically considered for the national title, has a wider historical range across East Asia?

Answer

Toki (Crested Ibis)

The Toki, also known as the Crested Ibis, is significant in the cultural history concerning Japan's national bird, as it was considered for the title alongside the Green Pheasant. However, unlike the strictly endemic Green Pheasant, the Toki historically maintained a much wider distribution spanning across East Asia. This distinction is crucial because it separates species that are icons of national identity, having evolved solely within the archipelago (like the Pheasant), from those that share significant cultural or biological heritage with neighboring regions, even if intense conservation efforts are focused domestically.

Which bird, historically considered for the national title, has a wider historical range across East Asia?
speciesbirdfaunaJapan