Haha, silly little fellows.
Is it normal for new tiels to hiss at you occasionally? For the most part he's fine but for example, when I'm putting a blanket over his cage at night he hisses a bit, and when I take it off.
Its truly an experience owning one for the first time. More than anything I just hope I can bond with him and that he will like me-- I just always feel bad when he hisses, I hate making animals scared.