Look - Think - Act
What does this bump on the head mean?
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
This egg has a clear bump on its ‘head’.
It might be a signal of a Newcastle disease (ND) infection. ND causes misshaped eggs.
It is good practice to vaccinate against this disease.