Hi i need some pic. of the inside of chicken eggs is it normal for the air sack to be about 3 inches tall and before the chick is a yellow circle above the air sack then i saw in the air sack there was a black spot what dose that mean? please help
Look for candling pics in the Incubating and Hatching Eggs forum. You may find all you need in the stickies.
hmm.. I don't know what you are seeing, but I'll link a great candling thread which will show you what development should look like daily. I will also add a picture of proper air cell develpoment. Any other questions and I'd be glad to help. Candling link : https://www.backyardchickens.com/a/candling-pics-progression-through-incubation-of-chicken-eggs Proper air cell development:
