WHEN THE Prussian naturalist Alexander von Humboldt arrived in South America in 1799, the colours astonished him. “Look at the blossoms, the birds,” he wrote. “Even the crayfish are blue and yellow.” ...

Hummingbirds are potentially the most colourful birds in the animal kingdom – at least, they are from the perspective of the birds themselves. An analysis of 114 species of the small, nectar-supping ...

The first animals with trichromatic vision were arthropods. Picture a primordial Earth: a world of muted browns, greys and greens. Fast forward to today, and Earth teems with a kaleidoscope of colours ...

Bird species that do well in urban areas are more colorful and less brown. Urbanization has a huge impact on the ecosystem and poses enormous challenges to animals and plants. The ongoing, worldwide ...

More and more people are picking up freshwater aquariums to add a splash of colour, some calm vibes, and a bit of daily joy to their homes. What often starts as a small, simple tank can quickly turn ...

Songbirds that dwell in tropical regions closer to the equator are more colourful than those living in milder climates. The findings support the idea that tropical animals are generally more colourful ...