We, at Safari Ostrich Farm, get this question regularly from our visitors. I must say it is a very relevant and good question.
Ostriches are the biggest birds in the world and of course can’t fly. We will during the course of our farming operation move the birds from one camp to the next (to let the ostriches graze on Lucerne) and hence one can say we herd them to the other camp/filed.
I have read somewhere that ostriches live in small herds that typically contain an x amount of birds. Some people say a group of ostriches is called a flock or a herd depending on your sentence structure : a herd of ostriches and a flock of birds. Others maintain they should be called a “pride” of ostriches. As beautiful as that sounds to me I am afraid it is wrong.
I contacted the local lead researcher at the Ostrich Research Farm here in Oudtshoorn and Doctor Anel Engelbrecht without hesitation told me they are a flock of Ostriches. You can herd them from one camp to the next but they are collectively known as a flock of Ostriches. Thank you Dr. Engelbrecht for helping me with this perplexing question.