Hi, I recently got 2 hand raised budgies and they are very into biting everything in their cage. I can tell they are happy and they come up to see me when i talk to them. My problem is that they bite for no reason. I've been sitting my hand beside the cage hoping they will get used to it. When i put my hand inside the cage they happily come over and climb onto it but start biting extremely hard. They don't seem stressed or scared either. I'm not sure how to prevent them from doing this. When i also take them out of the cage they fly away and land somewhere up high. They don't even seem that food motivated when i try give them millet to encourage them to stay with me. I can tell they like me, i am constantly sitting at me desk about 30cm's away from them so i am at a loss of what to do. Will they grow out of it or is there something i can do?