I have two tiels. The first one I got a month ago. She didn't know how to fly but has figured out how to glide and is doing great getting around the flight cage. My second tiel I got a week ago. He was having a terrible time with getting around the cage and attempting to fly around the house. I try to keep him from trying to fly but every once and a while he gives it a go and catches me off guard. The problem is in his attempts to get around his cage and fly on his own he has broken off a lot of his tail feathers. My questions are: 1. can he learn to fly/glide with broken tail feathers? 2. how long do they take to come back? 3. how do I keep him from not doing this all over again once they grow back. I feel horrible about this and don't know what to do. In addition, his wings are clipped and his cage before I got him was a big fish tank so he never learned how to climb and was very clumsy. He is getting the hang of it but shoot his tail is a mess.