I know there is no way to know for sure, unless watching them for hours on end, but does anyone know what a "normal" number would be? I have 1 rooster and 12 hens right now and wonder how many actually are getting fertilized. With the cold temps (im in northern IN) I have not spend much time in or around he coop and not observed a lot of mating. Also, I want to start collecting eggs to incubate and am concerned that the cold damages the egg before I can get home from work to collect them. We are supposed to get to 30's and low 40's this weekend and next week so this should be less of a problem but I just didnt know how long the fertilized egg could handle the cold. I know they are tough but not sure how much they can take. Thanks for any help.