Concept:A bird's home is called a nest.A nest is a place where birds lay eggs.It acts as a shelter for its young ones.Every bird makes its nest in a unique way.Explanation:Sunbird:They are tiny birds.These are usually seen during dawn.They make a tiny nest.Nest is usually made up of:HairGrassDry leavesCloth pieces. Koyel:It is a crow size bird, with a similar appearance.It does not make its own nest.Crow makes a nest for it.Indian robin:It makes its nest on the roadside between stones or grasslands.It is covered with twigs, cotton, and wool.Tailorbird:It is a small bird with a long tail.It makes its nest by switching the two leaves together.Thus,a.Sunbird (IV) Nest hanging from the branch of a small tree. It has hair, grass, thin turnings, dry leaves, cloth pieces etc.b. Koyel (I) Does not make its own nest. Crow makes nest for the bird in which it lays eggs.c. Indian Robin (II) Nest made of grass in the space between the stones along the roadside. On the top are placed soft twigs, roots, wool, hair and cotton wool.d. Tailor bird (III) nest of two leaves on a fresh that are stitched together using sharp beak of the bird.