I like the shots and agree with all the comments so far and would like to add one thing.
Try "crinkling" some type of foil in your hand. It'll get the horse to perk it's ears up.
Thanks for the tip scubabear6. There was someone waving a flag, and shaking the feedbag, but all to no avail. Hope to get another chance to take a few more, and I will try your technique!