If you’ve ever visited a tropical place, you may have noticed that the feathers of the birds looked brighter than those in other parts of the world. It turns out that the color of a bird’s plumage varies depending on latitude.
During the 1800s, three scientists from Europe who went on expeditions to the tropics — English naturalist Charles Darwin, British biologist Alfred Russel Wallace and German geographer Alexander von Humboldt — were amazed by the especially vibrant colors of flora and fauna they saw, and they hypothesized that animals became more colorful the closer one got to the equator, Phys.org reported.
https://www-ecowatch-com.cdn.amppro...tch.com/amp/tropical-birds-colors-darwin.html
During the 1800s, three scientists from Europe who went on expeditions to the tropics — English naturalist Charles Darwin, British biologist Alfred Russel Wallace and German geographer Alexander von Humboldt — were amazed by the especially vibrant colors of flora and fauna they saw, and they hypothesized that animals became more colorful the closer one got to the equator, Phys.org reported.
https://www-ecowatch-com.cdn.amppro...tch.com/amp/tropical-birds-colors-darwin.html