Lemurs sing in sync — until one tries to go solo
![indri](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/06/061416_ht_singinglemurticker.jpg?fit=860%2C460&ssl=1)
Among a group of singing lemurs called indris, pitch varies between males and females, but songs typically start on a high note and then descend, researchers have found.
Giovanna Bonadonna/Univ. of Turin