I was wondering...

I've been in the forest for some time, and I've often noticed how some players' calls, bleats or "sounds" are different to the ear. Some sound like moose, others normal deer, and there may be a few others that aren't like my call or the typical (and quite sadly annoying) fawn call.

I was thinking the sound of your deer depended on its mask/pelt. But what is it exactly that changes a deer's call?

Thanks~