Space owl
From Halopedia, the Halo wiki
File:Space Owl.jpg
The Space Owl
The Space Owl is an avian native to an as of yet unknown planet. Concept art has appeared for its inclusion in Halo Wars. If it is featured, it will act as what Ensemble Studios refers to as "ambient life," or wild animals meant to make the environment seem more realistic.
References
Halo Wars Update 2008-02-07. Ambient Life. Accessed on 2008-02-07
