Did you know that at night, they enter "TUPOR" which means they can rest and drop their heart rate to 50 beats a minute to conserve energy? When in torpor , and hummingbirds heart rate can drop to as few as 50 beats per minute. Hummingbirds beat their wings up to 80 times a second, which creates the soft humming sound that earns them their name [source: National Geographic]. Torpor can save up to 60% of a hummingbird's available energy. When a hummingbird goes into torpor, their metabolic rate is one-fifteenth (1/15) of normal sleep. During flight the heart may beat 1200 times per minute in some species. Hummingbirds have one of the highest metabolic rates of any animal, with heart rates up to 1260 beats per minute, breathing rate of about 250 breaths per minute even at rest. It makes up 1.75% to 2.5% (depending on the type or species of hummingbird) of the hummingbird's total weight. On average, a hummingbird's resting heart rate is 250 beats per minute. How many times does a hummingbird's wings beat per SECOND? The relative size of a bird’s heart is also affected by its lifestyle – Tinamous are flightless birds and therefore do not need such athletic hearts. Their heart can beat up to 1,300 times per minute while in flight [source: Defenders of Wildlife]. A very high heart rate, chest pressure, heart pain and a fluttering/straining heart ; Very low blood pressure particularly when upright (e.g. The heart of a hummingbird beats at an incredibly high rate—about 1750% faster than a human heart! Hummingbirds have an extremely rapid pulse rate, especially compared to humans. Ruby-throated Hummingbird: 615: It is a general rule in nature, that smaller animals have larger hearts in proportion to their body size and faster heart rates. Hummingbirds are busy little birds! All of this lightning-fast beating takes its toll: Hummingbirds have to eat every couple of minutes. When resting, the heart slows to 250 beats per minute. The extremely short legs of the Ruby-throated Hummingbird prevent it from walking or hopping. The best it … Heart: A hummingbird's heart is a relatively large organ in comparison to a hummingbird's body weight. 84/48 or less in an adult at rest), orthostatic tachycardia/POTS and reduced circulating blood volume (up to 50%) Feet burning painfully and turning blue/purple on standing (Reynaud's phenomenon) Their hearts beat at over 1,263 beats PER MINUTE. This makes the hummingbird's heart relativity the largest heart in the animal kingdom.