Wildlife Tracking Technology

Scientists want to know where animals go and what they do. They use small devices called trackers to follow animals. These trackers can be attached to birds, whales, bears, and many other animals. The information helps scientists protect wildlife and their homes.

Types of Trackers

There are many kinds of animal trackers. GPS tags use satellites to show where an animal is. Radio collars send out signals that scientists can pick up with antennas. Some tags are tiny enough to put on a butterfly. Others are strong enough for an elephant. Many trackers now send data straight to a computer using satellites.

What We Have Learned

Tracking has shown us amazing things. Scientists learned that Arctic terns fly from the Arctic to Antarctica and back every year. They discovered that sea turtles travel thousands of miles across the ocean. Tracking also helps scientists know when animals are in danger from hunters or habitat loss.

Fun Facts

• Arctic terns fly about 44,000 miles each year during their migration.
• Some tracking tags weigh less than a penny.
• Scientists once tracked a great white shark that swam from South Africa to Australia and back.

Did You Know?

Tracking data showed that some whales dive more than a mile deep to find food in the dark ocean.