Exactly and I have six of them doing that all at once. I LOVE the sound.What I find so very odd is the acoustic "boom" he produces under those feathers. Is this the "drumming" of which I've read? I thought that was the foot stamping....
However, the sound is amazing as it doesn't even sound like it's coming from him. Almost like he is surrounded by his own invisible, atmospheric phenomenon to create Turkey Thunder.
The other thing I find funny, if you are trying to talk around their pen. Every sentence, they all gobble in unison. You have to talk quickly between gobbles.
How about a gobbling video contest?