I bought this couple of cockateils 50 days ago exactly aiming at having them breeding and giving to new babies which I had in mind to raise and train one myself. The seller had told me they were in good health and nothing wrong with them except their feathers were falling because they did so "since it is the autumn season when some birds change their feathers" (I am not sure of this fact), but both birds were bald. In general, they were lovely and good looking (yellowish white) and they aged around slightly more than a year each, as I was told by the pet shop owner and as I could read the date on their rings attached to the feet. However, the female was afraid and agressive every time I approached them; she used to hiss and never allowed me to carry her, and she felt day by day as if unwell and was more sleepy than the male. I took them out once to allow them to fly in the room, to break the routine and move their muscles, but the female could fly; I thought she was weak to do so and would gradually be stronger. It is worth mentioning that I used to see feather at the bottom of the cage but I thought it was the feather changing season. One day, me and my family were all out of the house and when we came back we found a lot of feathers on the floor of the cage in a strange quantity and we thought they would have fought. After several days I noticed that the area of skin under her both wings was almost bare. After another week I entered my room one evening to see the bird (the female) rolling on the floor of the cage and looking in pain. The next morning I took her immediately to a vet (who treats all kinds of animals, but seemed to treat cats and dogs mostly). I explained everything of the above to the vet as well as the fact that sometimes I saw blood on one of the bird's wings. The vet said that the lack of feathers is due to skin fungi and the blood might be caused by pecking from the fellow, so the vet prescribed two creams for it: Travazol and Madécassol, fungi and antibiotic creams respectively, and advised to put the creams three times a day for two weeks. I did as prescribed, but after one week I realized that the female bird is not getting well. On the contrary, she was getting worse and weaker and started to have extreme Diarrhea; she started to tremble during the day and her eyes were half open; it seemed she was rubbing her face in the creams and even eating them. The next morning, she was completely closing her eyes and walking and looking for water and food blindly. I rushed her right away to the vet, who then prescribed a spray for fungi instead of the cream and gave me a solution for dropping in the bird's water to take care of the Diarrhea. He also gave me drops for the eyes and advised to open her eyes and leave one drop inside each of them on daily basis. The female cockateil was not eating and was weaker more and couldn't stand. Unfortunately, I wake up this morning to see she had passed away. I just wanted to share this and tell the birdkeepers not to trust vets. Had the pet prescribed the spray instead of the cream in the first place, my cockateil would not have died. I still don't know what happened to her and what she was initially suffering. I hope someone give me some advice or comment on the tragedy I faced.