Egg
Hatchling
Nestling
Fledgling
Adult bird
Birth
Mammals are born alive (not from eggs). Baby mammals are usually small and need lots of care from their parents.
Infancy (Baby stage)
The young mammal feeds on its mother’s milk and depends on adults for warmth, food, and protection.
Juvenile (Young stage)
The mammal begins to grow stronger and more independent. It starts learning important skills like finding food and moving around.
Adulthood
The mammal is fully grown. It can reproduce (have babies of its own) and look after itself.
Old Age
The mammal slows down as it gets older. Eventually, like all living things, the life cycle ends. | Chalk