I think it's kinda creative to tell which horse comes from his farm by using his logo. I am guessing it was painted on, but I wasn't sure how he put it on there.
http://www.facebook.com/sierra.rowland#!/photo.php?fbid=460089767936&set=a.460089032936.247786.184394742936&pid=5246071&id=184394742936
http://www.facebook.com/sierra.rowland#!/photo.php?fbid=460089767936&set=a.460089032936.247786.184394742936&pid=5246071&id=184394742936