Research indicates that the broad-tailed hummingbird will enter into torpor
A) if a minimum surrounding air temperature is met.
B) during a summer drought.
C) if their body fat drops below 15%.
D) if darkness exceeds daylight hours.
E) if insufficient nectar is obtained.

Question

Quizplus · Accepted Answer

Insufficient nectar is obtained, which is the primary food source for hummingbirds, can lead to torpor as a means of conserving energy.

Research Indicates That the Broad-Tailed Hummingbird Will Enter into Torpor