Q1:

S₁: Sun birds are among the smallest of Indian birds.

P : Though they are functionally similar to the humming birds of the New World, they are totally unrelated.

Q : They do eat insects too.

R : They are also some of the most brilliantly coloured birds.

S : sun birds feed on nectar mostly and helped in pollination.

S₆: Our common sun birds are the purple sun bird, the glossy black species and purple rumped sun bird, the yellow and maroon species.

The Proper sequence should be:

Question

S₁:	Sun birds are among the smallest of Indian birds.
P :	Though they are functionally similar to the humming birds of the New World, they are totally unrelated.
Q :	They do eat insects too.
R :	They are also some of the most brilliantly coloured birds.
S :	sun birds feed on nectar mostly and helped in pollination.
S₆:	Our common sun birds are the purple sun bird, the glossy black species and purple rumped sun bird, the yellow and maroon species.

The Proper sequence should be:

Ordering of Sentences