Assertion: sage grouse | /r/CapableOf | use bizarre pouches
Facets:
value: in their chests
type: LOCATION
value: to make loud burbling noises
type: PURPOSE
Source sentences:
text: They have the same spectacular courtship, where males gather on lekking grounds to puff themselves up, fan their tails into a starburst, and use bizarre pouches in their chests to make loud burbling noises.