Tesco supermarket bosses have said that they will stop selling eggs laid by caged hens, following pressure from a young animal welfare campaigner.
Fourteen-year-old Lucy said that keeping hens in cages is cruel, because they don't have enough space to move around or stretch their wings.
She asked the supermarket to stop selling cage eggs so that much fewer chickens have to spend their lives in cages.
Lucy launched a petition to get Tesco to stop selling the eggs and got over 280,000 signatures.
Tesco says they will stop selling eggs from caged hens by 2025.