finchmix22 wrote:The eggs usually don't look fertile until they're incubated a few days. How long was the hen sitting before you looked? If they're clear, then they may not have completed the dead, so to speak. Sometimes, they take a little practice. As you said, if they're young too, or too old they can lay infertile eggs. Keep observing and maybe the next clutch will be fertile.
They have been sitting for a week now. The eggs are perfectly clear, no signs whatsoever of vessels or tissue matter. Let's wait and see

By the way, have you ever tried breeding societies in box nests?