This thread is some what old, but I have a broody hen and she has been sitting on some eggs. I am very confused about how to candle eggs. All the hens in ym coop keep laying eggs and she keeps getting them to sit on. I candled some here eggs and none of them have veins but more of a big dark spot, they are heavier than my normal eggs...should I let her hatch these (are they hatchable because of the big dark dot) or should I just buy some hatching eggs? Oh, and she is a silkie and this is her first brood if that means anything. I will try to get some pics up tomorrow if possible! Thanks
![big_smile.png](https://www.backyardchickens.com/img/smilies/big_smile.png)