What do atiels eat?

My atiel escaped so I think that is a bit judgemental. I was changing his food and he got spooked and flew past me. Have you heard of quarantine? It is when you separate the birds for 30 days at the least to prevent diseases spreading. Your little fellow will probably have picked something up outside. And may I ask you why you have other species mixed in with budgies? I have seen canary's legs ripped off by budgies. Or is it divided in different areas? They eat fruit, vegetables and seed like you thought. They are rather like budgies in the area of diet.