weird render artifacts in chicken models

Pipeline
1

Heres an example:

n1tmr7.jpg800×600

Its a model from Yo franke, ‘levels/start_menu.blend’. I wanted to upload the blend, but many models are linked to it, i think its called ‘library’ in Blender. So if I just upload this blend many textures and models wont be in it and it will raise a warning. If you know of a way to pack the files into 1 blend i will upload it.

The problem is with the eyes. I dont think its caused by the ‘diffuse map’ or normal map as i tried disabling them.
Also, whats a diffuse map? Is it the same as specular map? Thats ‘gloss’ map in Panda, right?

EDIT: I think the eyes show up correctly when disabling “Env” button in “Material” panel, i wouldnt mind to know what that really does, and the other question still not solved,

2

Env is environment mapping is great for making mirrors and really shiny stuff like eyes.

See here:
http://www.google.com/images?q=environment+mapping

I am guessing some thing is messed up in the previewer.

3

I know about environment mapping. But I didnt know that can be automated by having the egg file do it. But doesn’t look like it really works anyway.
It really messes z-order of the whole model.