Book 31, Question 142
Why do scientists put tiny rings on birds’ legs?
A tiny, light ring with a number is called a band.
Trained and licensed scientists gently catch birds, put on the band, weigh and measure them, and set them free. If someone finds the bird again, the number shows where and when the bird was banded. This tells scientists how long birds live, where they travel, and how healthy they are. Never try to catch a wild bird.