Caught my hen off her nest and she has 5 eggs. The 4 I had set none were veined, eggtopsy revealed none even began to visibly develop. I took a pic of the 1 that yolk managed to show the visible spot but I cannot tell if it's a bullseye or not.
Is it possible for the first 4 to be infertile and now her 5 she's sitting to be fertile? I was sad they weren't and with my pair to be of good age I hope I don't have fertility issues.
Yes, it is possible for the first 4 to be infertile and the more recent 5 to be fertile. However it would make me wonder, so I would be waiting until she has been sitting on them for about 12 days and then I would try to candle 1 or 2, just to see. If these 5 are infertile I would just take them one day when she is off the nest. This will get her back on track and she will lay another clutch that will hopefully be fertile. She obviously wants to be a momma and she could sit those eggs forever if they are not fertile.