Hello. How long have you had your Tiel? Can you describe to me how tame she is; for example will she step right up on your hand or finger or do you have to chase her down? If she is biting your ears, I assume she must be sitting on your shoulder. Do you put her there or does she climb up by herself? Does she bite all the time or only once in awhile? If it's only once in a while, is there any pattern you can recognize as far as what causes her to bite or when she bites. It sounds like you possibly have a Lutino Tiel. If that's the case, unless she has ever layed an egg, or unless you have had a DNA test done, there is no way to know for sure whether it's male or female. The same applys to your question about what male looks like. If you can fill me in on this extra information, it will help me give you my best advice about the biting. Thanks, Patricia