Now there's a man who *really whistles while he works!

There was a code-language developed by the Amerindian tribes
consisting of assorted bird and animal calls that let them communicate over distances, most especially in times of inter-tribal warfare, or during their fight for survival against the US Army. Wonder what that is called? Or if it has any kind of official bearing in a lingual context at all. And wonder, also, if the Amerindians in the Central and Southern part of the continent also used a similar language during the days of the Conquistidors, etc.