信不信由你
Bats (蝙蝠) can fly. Are they birds? No, they are mammals (哺乳动物). ……

cent of a migrating bird'sweight(体重).Migration is hard for birds. Some fly across seas to get where they're going. But no matter how far they fly, birds seldom get lost. What are the secrets ……

我伴鸟儿高飞！What is it like to fly with birds? Christian Moullec says it is really great! He is 58 years old and from France. He first flew with birds in 1995. He helped the birds migrate (迁徙).Now ……

money to join him and fly with the birds. Moullec uses the money to do more things to protect birds...伴你高飞，法国男子为鸟儿迁徙保驾护航。The man in the back of this aircraft is flying with birds! He is Christian ……

above the chimney topsThat's where you'll find meSomewhere over the rainbowBlue birds flyBirds fly over the rainbowThen whyThen oh why can't I?If happy little blue birds flyBeyond the rainbowWhy, oh why ……

ever have the feeling that they don’t know where they’re going? Why does it seem that they never fly... that their movement seems to be very strange to us. Actually, what seems a short way for us is a long way for a fly ……

the science behind how birds fly.Birds travel thousands of kilometers to migrate in winter. When... into the air often fills our hearts with envy (羡慕). Some birds are born to fly among mountain tops above ……

信不信由你
Can birds fly backwards (向后)? Only hummingbirds (蜂鸟) can. ……

Can birds fly backwards? Only hummingbirds (蜂鸟) can. ……

Hummingbirds (蜂鸟) are the only birds in the world that can fly backward. ……

Humans could soon be able to take offIN the near future people could fly with birds.The world... exchange on Feb 24. The one-man jetpack can reach heights of around 1 kilometer and fly for 30 minutes ……

Can you help the baby birds out of thenest(鸟巢) so they can fly? ……

Q: Why do birds fly south (向南方) for the winter?A: Because it's too far to walk! ……

阅读文章，回答下列问题：1. When you whistle to the birds, what will they do?2. How high can the racing car fly?Answers: 1. The birds will sing. 2. The racing car can fly up to 60 meters. ……

. But no matter how far they fly, birds seldom get lost. (第107期，4版) 但不管鸟儿飞多远，它们都很少迷路。5. Most stay ……