Id : Wire-tailed swallow (Hirundo smithii)
The wire-tailed swallow is a small passerine bird in the swallow family. It is mainly resident, but populations in Pakistan and northern India migrate further south in winter.
This picture was taken at Ahmedabad outskirt area. You can found them any nearby waterponds where there is any perge near water , they dive in water continuosly for hunting small fish , they live in group most of time. Ahmedabad, Gujarat.