Scientists from the University of Exeter found that Meadow Brown butterflies have fewer spots if they develop in warmer weather. The change, which helps them blend in to a browner landscape, means that some species might not move north but stay where they are.
Females that developed at 11°C had six spots on average, whereas those that developed at 15°C had just three.
This means that if temperatures around the world continue to rise, this species of butterfly could become less spotty possibly changing the way it camouflages itself and stays safe from predators.
They also found that temperatures did not affect the males the same way it did with the females.