If humans had the metabolism of a hummingbird, they would have to eat about 155,000 calories a day.
Picture from Hummingbirds.net
They may
be the tiniest birds on the planet, but hummingbirds are
the biggest eaters. In fact, no animal has a faster metabolism—roughly
100 times that of an elephant. Hummingbirds burn food so fast they often
eat 1-1/2 to 3 times their weight in nectar and insects per day.
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