Look - Think - Act
What caused this pinhole?

Ask yourself the following questions: What do I see? What does it mean? What should I do? Click on the buttons in the image for more information.

Photo: Marcel Berendsen

There is a small hole in the shell.

A pinhole starts with tiny damage to the egg shell.

Check the inclination of the nest box and protruding parts in the next box (possible pressure on egg points when falling).