Hummingbirds’ hearts are larger in proportion to body size than those of any other warm-blooded animal.
Hummers have the most rapid heart rate for a bird: up to 500 beats per minute at rest and 1260 beats per minute during activity.
Their flight muscles account for 25 to 30 percent of body weight, compared to 15 to 25 percent in other strongly-flying birds.
Hummers have the most rapid wing beats of birds: up to 80 beats per second.
Their unique flight mechanisms allow them to hover for long periods of time, move in any direction (even backwards), and dive at over 60 miles per hour during displays.
They have high body temperatures: 105° to 109°F (40.5° to 42.5°C).
They have the ability to become torpid at night. (See the section “Powering Down” above)
Hummingbirds may consume 70 percent of their body weight, in solid food per day (8 to 12 calories) and 4 to 8 times their body weight, in water.
There are over 300 species of hummingbirds. They live exclusively in the Western Hemisphere, from Alaska to the tip of South America.
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