where do ruby throated hummingbirds spend the winter
Ruby-throated hummingbird The ruby-throated hummingbird (Archilochus colubris) is a species of hummingbird that generally spends the winter in Central America and migrates to Eastern North America for the summer to breed. It is by far the most common hummingbird seen east of the Mississippi River in North America.
Hummingbird With the exception of insects, hummingbirds while in flight have the highest metabolism of all animals â€“ a necessity to support the rapid beating of their wings during hovering and fast forward flight.[3][33] 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.[34][35] During flight, oxygen consumption per gram of muscle tissue in a hummingbird is about 10 times higher than that measured in elite human athletes.[3]