Slow Slither

In Canada, it’s winter. Red-sided garter snakes are hibernating. This means they are sleeping. They sleep in groups. They stay underground to stay warm. In spring, it gets warmer. Then the snakes wake up. They leave their dens. They slither out of the ground.

What guides them? Their sense of smell. They pick up smells from the ground and air. Each snake remembers the smell of its summer home. When the seasons change again, they return to their winter dens.

When red-sided garter snakes migrate, they move by the hundreds.

07/06/2024 18:31:22

Dallsheep live in North America.

Moving Up in the World

Some migrations move up and down. For example, Dall sheep move up and down mountains. They move as the seasons change.

In spring and summer, they stay high in the mountains. There is food there. They eat grass. Before winter comes, they move down the mountain. They need more food. There is food further down. How do they know the way? Scientists think the oldest sheep teaches the younger ones.

07/07/2024 01:22:17

Searching for the Sea

Red crabs live on Christmas Island. The island is in the Pacific Ocean. Every year, the crabs migrate. How do they know when to go? When the wet season comes, they know to move. The crabs leave the rainforest. They travel to the sea. They lay eggs. Then they return home.

Each year, millions of red crabs make a mad dash to the sea.

07/07/2024 01:22:17

A popup dialog has opened