Movie ID: 80s or 90s about two silver moon girls that come to Earth

I don't remember much about it except one girl is named Tavi. I'm not sure about the spelling. They had powers like being able to see through eyes of a flying bird. "Sept the bird, Tavi" I remember one said to the other and suddenly camera view was from the bird. There was an Earth boy with a dirtbike whose nickname was Dirt. That's all I remember. Not much to go on, I know.