Each egg in the incubator is checked to see how the embryo is growing. The eggs may be checked several times before they hatch.

Photos

Candling Eggs in the Classroom

Thank you to Mrs. Weatherholt's and Mrs. Boyles' 3rd grade classrooms at Campbell Elementary School in Lincoln, Nebraska for allowing us to take photos of their candling session

• Marty Cruickshank, UNL Extension, reviews the parts of an egg
• Marty Cruickshank, UNL Extension, reviewing embryonic stages
• Candling Eggs in the Classroom #1
• Candling Eggs in the Classroom #2
• Candling Eggs in the Classroom #3
• Candling Eggs in the Classroom #4

Chicken Eggs on Day 12 of the Incubation Period

• Viable Egg (Embryo is Alive).
• Quitter #1. (Embryo Died)
• Quitter #2. (Embryo Died)

Duck Eggs

• Yolker #1 (Egg is Not Fertile)
• Yolker #2 (Egg is Not Fertile)
• Quitter #1 (Day 7)
• Quitter #2 (Day 7)
• Viable Egg (Embryo is Alive-14 Days)
• Viable Egg (Embryo is Alive-14 days)

Chicken Egg - Day 7

The embryo - Day 7:

Here is what a chicken embryo looks like at Day 7. Can you find the eyes? wings? and beak?

Candling Photo - Day 7:

Do you see the shadow of the embryo. Look for the dark spot. Compare it to the embryo photo above. You can click on the image for a larger view.

Day 7 Embryo + Day 7 Candling Photo:

We put the photo of the embryo (above) over the shadow in the egg. Now you can see how the embryo would look in the egg. You can click on the image for a larger view.