Scientists have discovered that migratory birds have paler feathers to help them keep cool when flying during long journeys.

Scientists have discovered that migratory birds have paler feathers to help them keep cool when flying during long journeys.

Many species of birds fly across the world – or ‘migrate’ – every year to find the best places to eat, breed and look after their chicks.

They can travel thousands of miles, but often face the risk of overheating if they spend too much time flying in the sun.

A new study from the Max Planck Institute for Ornithology in Germany suggests that many migratory bird species have lighter-coloured feathers to help keep them from getting too hot. […]