'New World vultures lack a organ called a syrinx, so they also lack this; all they can do is hiss & grunt'
vocal cords
THEM CROOKED VULTURES: New World vultures lack a organ called a syrinx, so they also lack this; all they can do is hiss & grunt
New World vultures lack a organ called a syrinx, so they also lack this; all they can do is hiss & grunt
New World vultures lack a organ called a syrinx, so they also lack this; all they can do is hiss & grunt
THEM CROOKED VULTURES
vocal cords
THEM CROOKED VULTURES