It is day 14 on my 3rd hatch. We started 34 eggs from my buff orp girls and 1 roo. I have raised 2 other batches....hatched 13 of 14 in batch #1 and 14 of 18 in batch #2. Now...the question. I only have 6 eggs left in the 'bator that appear to be developing. A little hard to see much right now as it appears as a large dark blob, with little movement. The other 28 we just pitched....no development at all...just yolks after opening them. Is it possible for a rooster to have a "sterile period"? I have 1 roo, to 8 hens....is he "overworked"? I believe he is 3 years old. Very disappointing to go from a "full bator" to very few left. Any ideas.....I'm a little depressed.