rareearthtones.org has a list of rare and endangered animals calls for mobile phones.
Putting these unique cries, howls, and warbles on your phone for the world to hear is one great way to spread the word about endangered species from the rockhopper penguin to the Puerto Rico rock frog — and to help remind others why they need our protection.
This site is part of the Center for Biological Diversity’s, www.BiologicalDiversity.org.