Answer the questions.what is the largest bird in the world? what animal is the tallest in the world ? what bird is smaller than a sparrow? what is the smallest bird in the world?

1The largest bird in the world is an ostrich.
2The tallest animal in the world is agiraffe
3 Humming-bird(colibri) is smaller than a sparrow
4 The smallest bird in the world is a colibri.