A survey into bird adaptability in different environments being conducted by Donghwa University on behalf of Taroko National Park in 2010 has found that there are differences in the way birds of the same species adapt to different environments.

Research leader Professor Xu found that the size of , red-headed babbler (Stachyris ruficeps) and vinous-throated parrot bill(Paradoxornis webbianus) living at medium elevations was different to those living at low elevations. The weight, maximum wing span and tail length of the male vinous-throated parrot bill were larger than for males at low elevations. Female of the species living at medium elevations were heavier than those at low elevations. Bird use of their communication tool—their call—also changed with elevation. For example the frequency of the red-headed babbler’s call decreased as elevation increased.

Translated by：Kevin Lax
Source：Taroko National Park Headquarters