A Red-vented bulbul chick

I saw this Bulbul chick on the ground close to the nest where it was hatched. The parents were hovering close by. I was wondering whether it was unable to fly. If it stayed on the ground it would become easy prey to the cat roaming around. As I approached it its parents increased their chatter. In the twinkling of an eye it took wing and flew away. I guess fear and the warning from its parents induced it to make its maiden flight.