Madiwala Lake (near BTM Layout) is a good place for photographing birds. Especially birds in flight, as there are a lot of egrets & herons. I had a Canon EF L300mm prime lens with a Canon 600D body and shown below are some of the pictures.

Purple Heron in Flight Madiwala Lake

Purple Heron in Flight Madiwala Lake

Egret in Madiwala Lake

Egret in Madiwala Lake

Egret in Flight, Madiwala Lake

Egret in Flight, Madiwala Lake

Egret Madiwala Lake

Egret Madiwala Lake

Indian Pond Heron Madiwala Lake

Indian Pond Heron Madiwala Lake

Purple Heron Madiwala Lake

Purple Heron Madiwala Lake

Purple Heron

Purple Heron

Purple Swamphen

Purple Swamphen

Whistling Ducks

Whistling Ducks