This article totally blew my mind. Not only vultures can sense thermals -we all know that they have a variometer ‘built-in’ so to speak- but they also track each other through the sky to map what the airflow does. Fascinating!
Hannah Williams, the author, explains more here. A gread read!
And when you are done, make sure to check out the accompanying video showing footage from the camera mounted on the vulture back white it is thermalling: