Hummingbirds Are Small Birds That Require a Regular Food Supply

Multiple Choice

Hummingbirds are small birds that require a regular food supply.When hummingbirds are faced with a situation that decreases their food supply,such as a storm,which of the following adaptations would be most useful for the bird to survive such an unpredictable and short-term absence of food resources?

A) shivering
B) torpor
C) hibernation
D) burrowing into soil
E) fluffing their feathers