Just saw a coyote out in our lower pasture - in broad daylight

[Major Nikon]

12. I was raised on a farm and we had very little trouble with coyotes

They would take the occasional chicken or two, but other than that they weren't much of a problem and I don't remember any of the surrounding farms with horses and cows having problems with them either. Dogs are a different story. They will run livestock to death just for the fun of it and kill every chicken on the place if they can without eating any of them. That's not to say other people haven't had problems with coyotes if they are in a desperate situation, but in my experience coyotes just don't go after larger game. If you have a concern, keeping a foal inside a barn at night should solve any potential problem.

One potential benefit to coyotes is they may actually keep stray dogs away which are going to be a bigger threat. They are also a native species important to the ecosystem and may also prevent other problems.