Hummingbird coloration is caused not only by the color pigment, but to a greater extent by the interference of light in the feather tufts.

Such "optical coloration" is inherent in a number of birds, especially tropical birds. The color of their plumage changes when the angle of incidence of light changes, that is, the feathers begin to shimmer when they move.

🇺🇸 Light filters through the windows of New York's Grand Central Station, 1929

The fluffiest clumsiness.

Dawn on the mountain range of Riga, Switzerland 🇨🇭

Ukrainian cavalrymen on parade in front of Hans Frank, Nazi Governor-General of occupied Poland. Lviv, Ukraine. September 1939.

This is what the Rheinfall waterfall sounds like on the Rhine River in Switzerland.

The real experts in camouflage are the leafhoppers and orchid mantises.

A Jewish basketball team, 1921-1922

Someone in an aircraft took a photo of the fire in Pacific Palisades, CA

The two-tiered "Juyi" bridge in Zhejiang Province, China 🇨🇳

Bust of Gordian III, who was Roman emperor from 238 to 244. At the age of 14, he became the second-youngest sole emperor of the united Roman Empire, and ruled until age 20 when he fell in battle against Sasanian forces.

It rained drones in Guangzhou, China. Due to interference, more than 6 hundred devices, raised for the sake of a holiday show, fell into the river.

Cloudy, possible precipitation in the form of drones

In the wild, foxes live only about 7 years, but in captivity, they can live as long as 25 years.

Children sit on a wood fence in Quebec, Canada, c. 1920s-1930s

Asbestos cigarettes from 1950 cause twice as much cancer

Koalas are the only mammals other than primates that have fingerprints so similar to human fingerprints, that they are difficult to distinguish even under a powerful microscope.

Italian troops carrying a white truce flag surrender to British infantry, Sicily, 1943

30k volts

The Appalaza is an American horse breed known for its leopard coloration.

Wreck of German Zeppelin LZ 76 which was torched by its crew after making a forced landing near Colchester in Essex, after sustaining serious damage from an anti-aircraft shell and British fighter aircraft, while returning from a bombing raid over London, September 1916.

Flying a FPV Drone into the volcano.