Can someone send me a pict. All I see in most is a wad looks like yolk it's darker about 45% of the egg in the upper end
This helps. I'll find more for you. http://lancaster.unl.edu/4h/Embryology/movie11days.shtml Youtube has lots of videos! Some are our people from here. http://www.youtube.com/results?search_query=egg+candling+day+10&aq=8&oq=egg+candl
Here is a link of a picture from everyday through incubation... https://www.backyardchickens.com/forum/viewtopic.php?id=261876