We have these birds around the farm, called Killdeer. They particularly like to hang out in the cornfields. A couple of weeks ago, as I was riding up to the Pine Tree on top of the hill, I had one come running right at me while I was riding my horse. And it wouldn't back down, just kept coming at us. Both John and Secret just stood there mesmerized by this little bird coming at them.
Finally, I would steer around the bird and continue. The third or fourth time this happened, I noticed a nest of eggs, and figured out why this bird was challenging my horses. I totally avoid that small spot now, no need to cause undue stress!