We’d come to Andasibe for one major reason—because this is the place where the Indri Indri live. They don’t thrive in any other place. Not in zoos or wildlife parks, not in research facilities. Not even in other parts of Madagascar. The morning after we arrived, while we were enjoying fresh guava juice at breakfast outside and chatting with Henriette, our hostess, we got our first indication of how the Indri Indri sound calling to each other in the distance. Our lodge was probably five kilometers or more from where the nearest ones were. They can be heard for miles, keeping track of each other by sound. Once we’d hiked into Andasibe, our guide, Desi, asked us to wait while he searched off the main trail for the nearest group of Indri Indri. While we were waiting silently, we heard them calling again. The sound is a little faint in the video above, though it wasn’t very loud in person, either. There’s nothing to see in the video—aside from what an average section of trail looks like—just the eerie sound of the Indri Indri in the distance.
