Assertion: hummingbird | /r/CapableOf | slow their metabolic rate
Facets:
value: to 1/15th of its normal rate
type: OTHER
Source sentences:
text: To conserve energy when food is scarce, and nightly when not foraging, they can go into torpor, a state similar to hibernation, slowing their metabolic rate to 1/15th of its normal rate.