Fish camouflage sends mixed messages to aggro males

Colour-changing fish have only one skin, but they use it to communicate social status, attract mates, avoid predators and more. So what happens when those functions collide?

Painting by numbers

Individuals of a particular species generally differ from one another. We are clearly most adept at recognizing members of our own species, although dog and cat owners will be ready to confirm that their pets look unique. ...

Pigeons never forget a face

New research has shown that feral, untrained pigeons can recognise individual people and are not fooled by a change of clothes.

Ancestry attracts, but love is blind

People preferentially marry those with similar ancestry, but their decisions are not necessarily based on hair, eye or skin colour. Research, published in BioMed Central's open access journal Genome Biology, shows that Mexicans ...

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