I guess that is similar to geese hissing. It had occurred to me, taking the above video (with the noise of geese honking and a few other birdcalls in the background), that I've never heard vultures make any vocal sounds. According to this page, they don't have the vocal organs for it: https://www.allaboutbirds.org/guide/Turkey_Vulture/sounds
![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png)
chiming
no subject
Date: 2017-07-23 06:42 pm (UTC)From:https://www.allaboutbirds.org/guide/Turkey_Vulture/sounds