The largest hummer is the Patagona gogas, commonly known as the Giant hummingbird . Two other unusal hummers are the Sicklebill hummingbird and the Sword-Billed hummingbird . It is lined with plant down and held together with spider webs. It only takes 15 to 17 days for the eggs to hatch and the young birds start leaving the nest around three or four weeks old. The male has nothing to do with the babies.
Some species have two broods a year.
Many people think hummers only eat nectar or the sugar-water from the feeders that are set out for them, but they also eat insects for the protein. They catch insects in the air and from the flowers as they suck the nectar. Torpor means to go into an almost death like trance. Their metabolism is the highest of any warm-blooded animal. They can slow their heartbeat down from 1260 beats per minute to only 50 beats per minute.