Quote Originally Posted by Averax View Post
If it's described around Fanow, then it's a specific phenomenon to the Vii's of the first. The viera wiki page doesn't mention anything about it.
"The Viera wiki page" is not a definitive source on the game. The wiki is fan-edited and fans can get things wrong.

Also my understanding is that there was a dev statement somewhere that Viis and Viera culture can be considered near-identical but I don't have a quotable source for that. Err on the side of caution, but it does add up that on one side the Viera have an un-elaborated-upon "Green Word" and their racial and cultural counterpart is sensitive to the voice of the forest.