Animal Life - Hummingbirds

 


There are about 361 species and 113 genera of hummingbirds and they occur from Alaska to Tierra del Fuego.  They are mostly found in the tropics, such as Ecuador, where over 132 species live.

Named and known for their fast beating wings, which produce an audible hum, rates vary from 12 beats to around 80 beats per second in the smallest hummingbirds.

The bee hummingbird of Cuba weighs only 1.95 grams and is the world's smallest bird.

As you might guess, they have the highest mass-specific metabolic rate of any homeothermic animal.  Because of this, they are also one of the few groups of birds known to go into torpor, a deep sleep-like state that allows them to slow down when temperature and food conditions demand it.


Speaking of Ecuador - this hasn't been very lively, but maybe we'll catch something cool.


This one definitely has more visitors.



Smithsonian

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