We have a 6week old tiel for a week now. He is our second tiel as our first died very unexpectedly at about 8weeks. He eats 10 - 15ml of formula 3 times a day, very eagerly. He started having very loose stools earlier today, and he is also very distant and looks like he is avoiding to be touched. He would rather sit alone on the cushions than with us. I'm so worried that he might also die. Please help?