Hi I was wanting to raise a baby rhea that my friend acquired but has no idea anything about them and honestly neither do I. I have 20 acres and was going raise our fences this weekend. I have read that they need 6ft high fencing when full grown. What I need to know is 1) how do you know how old they are and if they're male or female. 2)what do they eat? 3)basically how do I keep this thing alive and thriving 4)does it need another rhea are they pack animals? Google has pretty much got me no where but here.