Most species of velvet geckos “can rather easily be identified and distinguished by their general appearance,” but some species have more “rather subtle” differences, the ...

Within species, color variations are found throughout the animal kingdom, including melanistic animals with more dark pigmentation and leucistic animals with a reduction of pigment. There are black ...

This adorable amphibian comes in different shades, but the pink or 'leucistic' variety is especially eye-catching with its ...

From helping them find mates to bettering their ability to camouflage, marks on animals and birds serve various purposes.

Hippos are thought to see mostly in shades of blue and green. Their eyes are adapted to their semi-aquatic lifestyle, allowing them to see well in murky water.

In addition, successful urban bird species have more elaborate colours in their plumage, which is especially true for females. Cities seem to favour more colourful birds -- probably because there are ...

The images below each show a scene as viewed by a human. Drag the slider to the left to see how an animal would see the same scene. Whereas human eyes contain three types of colour-detecting cells, ...

It thus attempts to show that the very existence of most of the brilliant colours of the organic world is due to the influence of the colour sense in animals. The author adopts, with some ...

A recent study suggested two sea bream species could recognize divers by color. Several times during ... Lab at the Max Planck Institute of Animal Behavior, had the feeling that the fish he ...

Bulls are red-green colourblind. They react to movement, not the colour of the matador’s cape, which is traditionally red. Owls see well in the dark but have limited colour vision. Their eyes ...

Colour in some of the Museum's delicate collections can prove challenging to preserve. Pigments in organisms including plants, birds and fish can decline quickly after an animal dies. For example, ...