Why do you think birds would be riding the horses our farm? Have they forgotten how to fly? Do their wings and feet get tired so they need to hitch a ride instead?
These are called cowbirds. Not like cowboys and cowgirls but usually they ride the backs of cows, searching for bugs and flies to eat. But since there aren’t any cows on our farm (yet) they ride the horses instead. And the horses like them to eat the flies on their back because flies are itchy and tend to “bug” the horses!
So our horses like giving rides to cowbirds, even if they aren’t called horsebirds!
Wouldn’t it be wonderful to have someone along for the ride as you go about your day?