We have several deer that frequent our yard and one that was born in our yard a few years ago. We believe the one that was born there is the same one that comes every night. But we've noticed this year that it has a collar and number on it. Why is it being tag and if it's being tag to watch it's habits, is there some place that we can watch it's movements also. We've been curious where it goes when not in our yard. We love having them visit our yard and don't want to see them moved out of the area.