need help

I have had my cockatiel Flapjack for a little over a year now. I got him when he was only a few months old. We have a very good bond and I can do stuff like pet, hold, cuddle, and feed him. Recently I had burned myself so I put a Band-Aid on my finger. He was scared of my finger whenever I...

So this just started yesterday and it's been happening ever since. When I leave the room, my cockatiel will give out a flock call as usual and I'll whistle back a certain tune and he's satisfied. But yesterday when I whistled back he screamed twice and then stopped. It's happened each time I've...

This is Mischief, he/she hatched on 4-14-16 so is 11 days today. BUT, when I compare him to a growth chart, you'd swear he was barely 5 days old. He can barely lift his head up, and the parents are starting to lose interest in him. Could you please check out this video and tell me what you...