So I’ve read up on budgies when their noises change its a sign they could be sick. I recently got a cockatiel to be my budgies buddy. my budgie really likes her. Anyway, recently the budgie chirps differently every once in a while. It sounds exactly like the cockatiels chirp and is not constant. Its with all of his other usual chirps. Is he mimicking the cockatiel or should I give my vet a call?