Cockatiels do not grow feathers
Hello, I have two cockatiels. The first is more than four years old. A long time ago, the long feathers on its tail and wings fell out and they never grew back I consulted a doctor and he gave me vitamins, in addition to other vitamins that different people advised me, but all of them did not help. The second bird is about 8 months old I have been raising it since he was a few weeks old. At first, everything was normal and his feathers were beginning to grow but later on they began to fall out and no longer grow. Their situation worries me a lot, as they have been unable to fly for a long time. To be frank, the big bird’s health condition is not the best he makes a sound when breathing and in a previous period he was losing its voice. As for the little one, he is very active, but he does not know how to climb.
I would be very grateful to get an answer from you.