Hi just tested this on my server but I cannot replicate the issue my nests are spawning as normal,
but at least I found a 185 lightning egg in the process.

Cleared them all and then they respawned

I´m a bit ill but i will check this problem as soon as possible

no hurry. Thanks to both of you for checking

Do you use Classic Flyers, if so make sure the totem is in place

Yes I do use classic flyers. The Totem?

In classic flyers there is a totem you have to make and place in the world or the eggs do not spawn. This totem is also used to keep the number of flyers controlled so that overspawning does not occur.
Check the discussions and description of the mod, it tells you all about it.
Hope this sorts the issue for you.

Thanks I will check this out. We had the nests and eggs spawning without it for the first few days.

I am not running Classic Flyers, and i did not have any nests spawing either. my server is fresh, only up for less than a week so far.

nests still arent loading on our server either. please fix this asap!

My server is having the same issue....nests are not spawning. Not running classic flyer mod either

I added the totem. Waited a few days and still no nests. Looks like others are having this issue also.

Problem is now Fixed