Sense Sonnet - Chiller

Shhh Koala

Koalas have a quite deep pitch,
So very low given the size.
So scientists just got the itch
To digging deeper for the whys.
Some koalas did "volunteer"
Their voice boxes for a look see.
Extra vocal folds did appear
Outside of the larynx there be..
Discovery that did excite.
Koala sound solved - a big deal.
The scientists expressed delight
In long and varied high pitched squeal.

Koalas - beware making sound,
When scientists may be around.