I have a BLR Wyandotte rooster with a flock of two BLR hens, 1 black Australorp and 3 Easter Egger hens. I want to hatch the eggs of my BLR's. Do I have a good chance of fertile eggs with a ratio of one roo to 6 girls? Is there anything anyone suggests to increase chances of fertile eggs? We live in NY and they have been in their coop most of the time lately due to the weather. Thanks! Tracy