So, I have a 15 month old RIR rooster with 16 hens. He has been doing his job fertilizing all the eggs for many months now. However, in the last 2 weeks, only a few eggs here and there are fertile all of a sudden. I know it sounds crazy, but I started watching him to observe his mating efforts. He seems to "try", but is having a hard time balancing. Once balanced, he tries to initiate the final contact, but doesn't quite make it and then jumps off. Is anyone familiar with this type of issue? Also, he has never been aggressive in the past, but since this mating thing has started, he is showing minor aggression toward me. He doesn't appear to be sick or injured. He has no signs or symptoms other than the mating issue. But, maybe I'm missing something. Any thoughts and ideas would be great.