User blog comment:Argonash11/Why can't Quarians have see-through visors?/@comment-743796-20100715120601

@ Argonash11: I mentioned this in another forum....

Aside from the eyes, you can see a slight outline of the head, which shows up as a smaller, more elongnated head than most species, similar to birds. Also, the narrow width of the mask also reinforces that belief.

But I also stated that Tali could resemble one of the Chozo, better known as the now-extinct species of Avian-like creatures that raised Samus as a child, in the Metroid Series.

Here is the image of a Chozo:

http://multiplayerblog.mtv.com/wp-content/uploads/2008/04/chozo.jpg