Which hummingbird adaptation is most advantageous for supporting their high metabolism?
a. entering torpor
b. long beak and tubular tongue
c. ability to hover
d. migration

The answer is (1.) entering the torpor

The hummingbirds are the tiniest bird in the world but is also the biggest eater. They burn food so fast they often eat up to 3 times their weight. They feed on nectars and insect. When they can’t eat especially on cold temperatures, these birds go in a sleeping state called torpor. A fascinating way to conserve energy.

b is dominant over the allele for the white fur.

digestion

it excretes wastes