Bond bond bond. I am not quite sure how to answer these questions as all my horses have always come when I call. Accept for my one old gelding who was going deaf so I had to make sure he saw me and then he would come. Some people say to give treats once they come up to you as a reward but I never used treats. My main tip is to spend time with them in their home. Just go in their pasture and sit down. Be in their presence and talk to them. That really helps to build a bond and encourages them to want to be with you more.