Page 237 - Demo

The Arctic tern, a migratory bird, travels around 25,000 miles per year during its migration.Did you know?How does the tail of a bird help in flying?Checkpoint236 Arrow-Puffin-3_Semester-1 ScienceA bird uses its tail to turn while flying. When it lands, it spreads out its wings to stop.ostrichkiwi emupenguinpeacockduckhenNot all birds use their wings to fly. There are many birds like the penguin, the ostrich, the kiwi and the emu that do not use their wings to fly at all!Penguins use their wings to swim and move in water. Ducks and swans also use their wings to swim. Peacocks and hens cannot fly high. So they do not use their wings too often.THE BODY OF A BIRDHave you seen the shape of a bird%u2019s body? It is boat-shaped. This shape helps it to fly. Further, the bones of a bird are thin and hollow. The light weight of a bird also helps it to fly easily.FEATHERS OF A BIRDThe body of a bird is covered with feathers. Some birds have brightly coloured feathers. They look so beautiful.