An ostrich's eye is bigger than its brain.
Despite the tiny brains, ostriches are big birds. They can weigh between 140 to 290 lbs and their eggs range from 3 to 5 lbs. Ostriches are closely related to dinosaurs, and have similar tissue to a T-Rex.
One thing that's not true about ostriches is that they don't bury their heads in the sand when they're scared. Male ostriches dig large holes with their beaks to make a nest for ostrich eggs. The male and female both tend to the nest regularly by flipping the eggs with their beaks, and they both take turns sitting on the nest.
Lot's of interesting ostrich facts can be found here.