Identify this picture 🖼️.

Which bird makes its nest in a hole of the trees ?

Which bird was used to carry letter in ancient times ?

Which bird has a red sharp,curved beak and green coloured body ?

Which bird has an ability to fly Backwards ?

Which bird cannot fly but is the fastest bird on earth ?

Identify this bird in this picture which sleeps while floating on the ocean 🌊.

It is usually seen in our neighborhood and eats a lot of seeds everyday . Identify this bird.

Which bird is seen in our neighborhood and is of completely black in colour ?