A butterfly undergoes big changes over their lifetime. They go from an egg to a fluttering adult. This process takes four different stages and is called metamorphosis.
STAGE 1: Egg — An adult butterfly lays eggs on a plant that the butterfly likes to eat. When the butterfly hatches, this plant will become its first meal.
STAGE 2: Larva — Once the butterfly hatches from its egg, it becomes a larva, also called a caterpillar. Caterpillars have one main job, to eat. They eat as much food as possible to have enough energy for their metamorphosis in the next stage. Caterpillars grow 100 times their size during this stage.
STAGE 3: Chrysalis — When the caterpillar grows big enough, it attaches itself to a twig or steady support. The exoskeleton falls off, leaving a sack. This sack is called a chrysalis. While the caterpillar is in the chrysalis, it changes into the shape of an adult butterfly. This change can take only a few days or over a year if the conditions are not right.
STAGE 4: Adult — The adult butterfly comes out of the chrysalis. If it is too cold when the adults emerge from the chrysalis, they will find a sunny spot and spread their wings to warm up so they can fly. During this stage, the butterfly helps pollinate the plants fluttering from flower to flower.