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This 2018 video is called Beautiful hummingbirds show off their breathtaking colors.

From Princeton University in the USA:

Spectacular bird’s-eye view? Hummingbirds see diverse colors humans can only imagine

Team trains wild hummingbirds to discriminate UV color combinations

June 15, 2020

Summary: While humans have three color cones in the retina sensitive to red, green and blue light, birds have a fourth color cone that can detect ultraviolet light. A research team trained wild hummingbirds to perform a series of experiments that revealed that the tiny birds also see combination colors like ultraviolet+green and ultraviolet+red.

To find food, dazzle mates, escape predators and navigate diverse terrain, birds rely on their excellent color vision.

“Humans are color-blind compared to birds and many other animals,” said Mary Caswell Stoddard, an assistant professor in the Princeton University Department of Ecology and Evolutionary Biology. Humans have three types of color-sensitive cones in their eyes…

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