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Candling Fresh Eggs
Week 1 of Incubation
Weeks 2 and 3
Week 4 of Incubation

Fresh Eggs: Air Cell Problems
This egg has a poorly positioned air cell. It is in the 'middle' rather than at the 'fat' end. picture with air cell marked
picture on right with bubbles and air cell marked When the egg is opened, we can also see that there were small bubbles actually attached to the yolk (meaning they were there before the egg was opened). The shell was opened right at the air cell.
a bigger close-up

Fresh egg with well-shaped, small air-cell.
What is a ruptured Air Cell?
The air cell is essential for the duckling when it is time for it to hatch. It also provides a place for evaporation to occur. Rough treatment of the egg can damage the air cell. Once this has happened the duckling is unlikely to make it to term, and if it does, it is likely to die before it hatches.

Another fresh egg with a good air cell.
Why is a poorly placed or ruptured air-cell a problem for hatching eggs? link to movie.
Can't watch the movie? Download the Quicktime media player.

farm/candling/air_cell.txt · Last modified: 2020-05-09 15:02 (external edit)