What would kill the little bird. We did have a pet parakeet but now it gone. Only thing we did different is put a small wash towel in cage for it to sleep on and gave it cockatiel food. Could one of them killed it. It was fine one day the next day dead. We had been giving it cockatiel food for aobt month was that bad for it? It always had lots of water in waterbowl always kept plenty of food so what could happen to this little bird? It didn't act sick a tall always chirping until one evening it was found dead on the floor. It was just like it just fell off it perch and died. We wasn't home when it died due to lots of sickness in family rite now. It was kept in our childs bed room. Our child never would get it out of cage due to it wanted to bite but our child would always give it needs.