Can you tell anything about a bird by is fan? I know a jake will have four longer feathers in the middle. But I killed two birds that were almost identical in weight and beard length. The bird in the back had 7/8 spurs 8 inch beard and was 18lbs. Fan in front had 3/4 spurs, 8.5 inch beard and 18.5lbs. The front fan looks like it is from a younger bird to me. What are your thoughts?