Sorry I forgot to mention that!! I only check around 10 % of my eggs to see if they are fertile I never check anymore than that as I don't feel it necessary.. I've never had the problem of eggs 'not' hatching due to a quick examination but then again there's always a first!
Just a quick note...
Fertile Chamelen eggs
Hi, I thought i'd post my photos to help people recognise fertile eggs at quite an early stage...
If you have retrieved the eggs as they had been layed you should see the signs of a fertile egg quite easily...try to make sure they go into the incubator in the same...