How many times does a hummingbird heartbeat per minute?
With the exception of insects, hummingbirds while in flight have the highest metabolism of all animals – a necessity to support the rapid beating of their wings during hovering and fast forward flight. Their heart rate can reach as high as 1,260 beats per minute, a rate once measured in a blue-throated hummingbird, with a breathing rate of 250 breaths per minute, even at rest. During flight, oxygen consumption per gram of muscle tissue in a hummingbird is about 10 times higher than that measured in elite human athletes.
How many times does a hummingbird's heart normally beat per minute?
1260
Hummingbird
No context provided
When a hummingbird is cold, how many times does a hummingbird's heart beat per minute?
50-180
No context provided
During rest, how many times does a hummingbird heartbeat per minute?
250
Hummingbird
https://en.wikipedia.org/wiki/Hummingbird
During nighttime torpor, body temperature falls from 40 to 18 °C,[76] with heart and breathing rates both slowed dramatically (heart rate to roughly 50 to 180/min from its daytime rate higher than 1000).[77]
Hummingbird In myth and culture
A hummingbird heart rate can reach as high as 1,260 beats per minute  with a breathing rate of 250 breaths per minute, even at rest. During nighttime, their heart and breathing rates both slowed dramatically, around 50-180 heart beats per minute.