Page 240 - Demo

The study of birds is called ornithology. Dr. Salim Ali is a famous Indian ornithologist.Did you know?The cassowary is a very dangerous bird. It can even kill a person!Did you know?nestArrow-Puffin-3_Semester-1 Science 239Preying birds like eagles and hawks have very strong and sharp claws called talons. They help them to catch and hold their prey firmly.Scratching birds like hens have sharp and hard claws which help them to scratch or dig the ground to eat insects and seeds in it.Water birds like ducks and geese have webbed feet which help them to paddle and push the water while swimming.eagleWater birds like herons and cranes walk through water. This is called wading. Wading birds have spread-out toes that help them walk in water.swan duck henHOMES OF BIRDSLike you, birds too need a home.They build nests on trees. They lay eggs in them. The eggs hatch and the chicks stay there till they are old enough to fly. The nests keep birds safe from bad weather and enemies. Have you seen a bird%u2019s nest? You can find one on a tree, on the terrace or the ventilator of a house.heron craneWhat is wading in birds?CheckpointWhy do birds build nests?Checkpoint