Somewhere my father is grinning with approval at my never-ending blog thread for him! I present installment #26 describing what to call groups of animals … See how many you can guess. Answers listed at the bottom of the page.
India is good for a surprise around any corner and on any street. We once passed a band of musicians blowing horns and banging drums, marching nonchalently down the middle of the road. Cows, of course, are sacred in the Hindu faith and go wherever they damn well please.
And on our way to the airport near Bhopal, our taxi driver asked if we wanted to halt and watch a truck feed the passengers.
They were transporting a brood of hens to market.  Properly defined, a brood is the family produced at a single hatching. This group had to be several broods. 
We were bemused by how healthy the hens were, and how agreeable to being transported together in baskets. They promptly headed for the field and their feed – and then back to the roadside to be placed again in baskets.
Chickens can’t fly (although they will get a running start and stay airborne for a second or two). There are more chickens than any other bird. According to Wikipedia, “[t]he domestic chicken is descended primarily from the red junglefowl (Gallus gallus).” They’re a gregarious species, and chicks are both incubated and raised communally.
We didn’t witness any of the usual pecking order. Maybe these hens were too hungry.
Later that night over dinner (no, I don’t recall if I ordered a chicken dish) we talked about animal husbandry. The fowl transport truck seemed to both of us much less cruel than an industrial chicken factory.