problem?

Hello! A small part of my cockatiels beak seems to be falling off. Is this normal?

My cockatiel has layed 4 eggs, 1 of them has died for an unknown reason after about 2 weeks, after 2 more days I found the weakest one with empty crop for prolonged time while the biggest 2 with full crop so I have decided to take him out as it seems that she isn't going to feed him like the...

So I take my bird to the shower, and that’s his designated preening time before he gets wet. So he does the usual wing, tail and forehead preening, then he picks up his foot and preens it. After a minute of foot preen, he will scratch his “beard” with his foot like a detective. He repeats the...