Ok in this movie the little aliens crash in a barn in some small town. And everyone thinks they are little kids in costumes because its halloween. And some little kid (I think it's a little girl in a duck costume or something) knows who they are and tries to help them get back to their ship because some other alien life force is after them.

Sound familiar?? I know I used to have this movie, and for some reason I can't remember the title. But it's a really good movie! :)

Spaced Invaders (http://blogcritics.org/archives/2006/10/21/145728.php) from 1990. Link goes to a site that includes a picture of the girl in the duck costume.

Yup! That's the one!!

THANK YOU!!