Which is the largest bird in the world?

Which is the smallest bird in the world?

Which of the following cannot move their eyes?

Name the bird in the below picture.

The bird soaks up water in its feathers like a sponge. 

Name the bird in the below picture.

Which one of the following bird cannot fly?

Name the bird whose beak acts like a sieve.

This bird lives on water snails.

Which one of the following is a singing bird?