Whistled language is sometimes also called bird language. This is because, in a similar fashion to birds, whistled language uses the acoustic properties of whistles to convey meaning within a community.
With modernization, whistled language has declined over time but remains still in communities that heavily partake in outdoor subsistence activities (e.g hunting, fishing, farming, food gathering, hill agriculture, and/or cattle farming), associating its use with rural ways of life. There is a definite relationship between landscape and whistled speech as it serves as the tunnel for the transmission of each signal across space, variations of whistled language have been found all around the world, but has declined over the years. Today, whistled language holds cultural and symbolic meaning, indicating membership within communities and defining identity.
Though it's practice has dwinded, many Mazatec indigenous people of Oaxaca, Mexico still use whistled language today.