Currently doing a bit of work with a special egg-laying race myself and I wanted to add my two cents here since I came here looking for information.
As far as egg laying Chambers go I like to set up a large room filled with nests and then designate a dormitory over top of that and then have everything in the dormitory that's needed for a dormitory food stockpiles tables chairs and then in about a year I have 100 babies its frightening........
And I say a year but I'm unsure of the actual time it's a good bit of time as far as I can see in my in my setup but, I read somewhere that it said fort mode(entitys)egg layer take twice as long I can't remember what the exact amount but it's a lot longer to produce young than other egg layers
Make sure no stockpile accepts these eggs
Then after the first clutch is born take all the eggs that didn't hatch and turn them into meals or throw them away
Also I'm noticing after big clutch births of eggs the reproduction pretty much comes to a standstill and I think this is due to population cap limits
Not even going to lie seeing dudes lined up and q's waiting at the egg hatch box is kind of hilarious knowing what they're waiting there for LOL
Although I have no actual proof that this deed is taking place inside of these dormitories all the time I see males going in and just standing there with no activity standing adjacent to an nest box I can only imagine what what they're doing
Here is a shot of a setup i threw together just now its pretty sloppy but you get the idea
showing room layout this clutch was born in a few months super fast !!!!! i turned hauling off for the women and i guess it helped o.o
My little green duders can have max 30 babys from eggs
Wiki confirms can't lay eggs and breed normally.
And after several tries with several different egg Chambers on different forts I get with my setup I have between 60 and 90 eggs hatch and then no more eggs hatch after that and I have the population cap set as high as the game will allow and it's still just stops after a couple couple clutches hatch, and I'm starting to suspect that it breaks migrant waves too if you have gigantic clutches of eggs born at all at the same timewow was I wrong life finds a way I guess I was just really unlucky for really unlucky if you don't have eggs hatching make more nest boxes or destroy all the nest boxes and rebuild all the nest boxes I guess, I read that somewhere else too.
Went from like 80 creature to over 200 in 3 births lmao from village to metropolis in about 3 seconds 🧠💥👍
Also just noticed that this can happen undead can lay eggs also because I have a dead creature that got resurrected and it's laying eggs
And one last piece of advice for egg-laying sieves make the children born adults because if you don't do this the forts will become hell to micromanage and I mean utter hell cuz you will have a baby population outweighing the adults immediately and nothing will get done..🙏👍 good luck !!!
LOL that egg laying life