Hello folks Canadian guy here. EH! After a tragic accident I have 6 mallard eggs in my homemade incubator. When candled a week ago everyone seemed fine and healthy. But as of yesterday I've noticed a rather dark spot on one of the eggs?!?! Anyone able to tell me if its good or bad? Temps are around 28-30 celcius and humidity is 75-85%. Thank you in advance truly love this site!!!