Name 5 bird that makes its nest in a tree trunk like the barbet does

A bird makes its nest high up on a tree. This bird could be

Which of the following bird makes its nest in a hole of tree trunk?

Identify the birds who makes its nest on the top of tree with grass and lays its eggs between stone

Which of the following birds makes its nest among the thorns of a cactus plant?

Assertion: The fossil bird named Archaeopteryx is regarded as missing link between reptiles and birds. Reason:This bird had feathers, wings and beak like the birds and claws on figers,teeth and long tail like the reptiles.