Rufous-crested Coquette

From Wikipedia

Hummingbirds are birds native to the Americas and constitute the biological family Trochilidae. They are the smallest of birds, most species measuring 7.5–13 cm (3–5 in) in length. The smallest extant bird species is the 5 cm bee hummingbird, which weighs less than 2.0 g.
It is a very big family with 359 species in 106 different genera. Too many to make a split out. A very good actual list you can find following this link to the website of the IOC.

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Updated 31/07/2019

There are 359 different species of which I photographed 84 species so far. There are 12 species which I photographed male and female.