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[FrankyPlaysGames]

How can I make sure this clutch of cave croc eggs are fertilized other than waiting? Also, does it work like normal impregnantion, where is can happen far away from a wild male?

[Chimerat]

How can I make sure this clutch of cave croc eggs are fertilized other than waiting? Also, does it work like normal impregnantion, where is can happen far away from a wild male?

The only way I know is by waiting. And all females still get impregnated by spores. >_<

[Tacomagic]

Of note with eggs:

•The first clutch laid by a female will usually be infertile.  Make sure that the first batch of eggs is always collected for food.

•The first clutch laid after a successfull hatch will always be infertile.  Make sure that at least 1 batch of eggs is collected between hatches.

•Eggs take about 6 months to hatch (200,000 ticks).  If they go any longer than that, they are infertile.  Sometimes eggs just are infertile, so more than 1 batch will need testing.

•All animals have a roughly 25% chance of being sterile.  Sterile females will lay eggs, but they never hatch.  Fertile females cannot lay fertile eggs if the only male on the map when the eggs are laid is sterile.

•Eggs can be fertilized by any fertile male present on the map, even if there is no direct access.

[Tarkakagogue]

Tacomagic, many thanks! I created an account just to say thank you.

 I've lurked for upwards of two years reading and getting my questions answered on these forums or the wiki.  I couldn't figure out the reasons why my poultry's eggs would or wouldn't hatch. This severely limited my leather-working industry and I invariably end up with semi-clad dwarves because the military received priority for the mounds of leather I would buy from caravans. I just can't justify yarn shoes.

Respectfully,
Tark

[Chimerat]

•All animals have a roughly 25% chance of being sterile.

Technically they're either Asexual or Homosexual, not sterile (though with DF it's effectively the same thing).

Thanks for the info about the wait time, though it's hard to tell who's clutching when you have a lot of females around.

Oh, and Dwarf Therapist helps a fair bit with ensuring you can butcher the females who'll give you "dud" eggs.

[Tacomagic]

•All animals have a roughly 25% chance of being sterile.

Technically they're either Asexual or Homosexual, not sterile (though with DF it's effectively the same thing).

True, but since those don't even come close to matching real world asexual/homosexual percentages for animals (especially domestics, but not counting Giraffes) it's been widely referred to as the sterility bug.  And since it was acknowledged as a bug with the way the tag is used on non-sentient creatures, I've kept the name.

[Chimerat]

True, but since those don't even come close to matching real world asexual/homosexual percentages for animals (especially domestics, but not counting Giraffes) it's been widely referred to as the sterility bug.  And since it was acknowledged as a bug with the way the tag is used on non-sentient creatures, I've kept the name.

Well, as an Asexual female I am relieved to hear that you know there's a distinction. I just wanted to ensure it was made.

Also, the prospect of Asexual animals is in interesting one... *ponders suggesting that as a topic once she has enough SciShow support in the bank...*

[Stormfeather]

One other bug that I noticed recently and reported, that you might want to watch out for (at least, I assume it's a bug, not a feature): If an animal has been tamed by a tamer and formed a bond with them, whenever that tamer comes into their pasture, they will run to join them. Even if they're SUPPOSED to be keeping their nest of eggs warm. (And in that case, if they do have eggs, they then bounce back and forth between the trainer and nest).

In Dwarf Fortress, if the mother leaves the nest even for a second, the eggs get cold and can't hatch. So obviously, this is undesirable behavior (to put it mildly) if you're trying to breed egg-layers that were once wild.

I got around it for my Emus by building walls around the nests with one door, so that it made a room of one tile. Then once the emu went in to lay her eggs, I made the door tightly closed (q), find the door, (o). Which keeps pets from pathing through it. I noticed that any re-training seemed to go on with the trainer a few tiles away anyhow, so they didn't go through the door and displace the mother/let them slip through the open door.

I suppose you could also maybe get around it by assigning a different trainer to each animal, but if the trainer comes in to train that one specific animal, they'd still probably leave the nest. :/

[Chevaleresse]

You could just use one-tile pastures.

[Stormfeather]

Maybe... I'm not sure though whether they'd leave the pasture when they saw their trainer or not.

[Loci]

•All animals have a roughly 25% chance of being sterile.

Technically they're either Asexual or Homosexual, not sterile (though with DF it's effectively the same thing).

Technically, they're predominantly unwilling to reproduce because they won't commit to marriage or have children out of wedlock. Choosing not to procreate (for whatever reason) is neither a sexuality nor sterility.

[Kaos]

Of note with eggs:

•The first clutch laid by a female will usually be infertile.  Make sure that the first batch of eggs is always collected for food.

Not really, you probably had bad luck with gay animals...

•The first clutch laid after a successfull hatch will always be infertile.  Make sure that at least 1 batch of eggs is collected between hatches.

At all, this most likely is due to achieving an animal cap, try reducing your animal population...

•Eggs take about 6 months to hatch (200,000 ticks).  If they go any longer than that, they are infertile.  Sometimes eggs just are infertile, so more than 1 batch will need testing.

The only ways eggs are infertile is by not having two straight animals of opposite genders on the map or reaching the population cap

•All animals have a roughly 25% chance of being sterile.  Sterile females will lay eggs, but they never hatch.  Fertile females cannot lay fertile eggs if the only male on the map when the eggs are laid is sterile.

•Eggs can be fertilized by any fertile male present on the map, even if there is no direct access.

indeed

[Tacomagic]

Of note with eggs:

•The first clutch laid by a female will usually be infertile.  Make sure that the first batch of eggs is always collected for food.

Not really, you probably had bad luck with gay animals...

•The first clutch laid after a successfull hatch will always be infertile.  Make sure that at least 1 batch of eggs is collected between hatches.

At all, this most likely is due to achieving an animal cap, try reducing your animal population...

•Eggs take about 6 months to hatch (200,000 ticks).  If they go any longer than that, they are infertile.  Sometimes eggs just are infertile, so more than 1 batch will need testing.

The only ways eggs are infertile is by not having two straight animals of opposite genders on the map or reaching the population cap

I observed all three of these behaviors while doing my sterility bug workup a few months ago.  In the case of my study, I was slaughtering all hatchings after each clutch was hatched, so population cap was not an issue at any point.

Due to the methodology used, these cases of infertile eggs were not explainable as being due to the orientation flag or population cap.  However, at the time I was not specifically aiming to test egg laying behavior, but rather the sterility bug, so I did not specifically keep the numbers and instances of infertile eggs laid by females that were determined to be part of a valid paring. I only made some observations that egg laying appeared inconsistent compared to mammalian birthing in my writeup.

[Chimerat]

Technically, they're predominantly unwilling to reproduce because they won't commit to marriage or have children out of wedlock. Choosing not to procreate (for whatever reason) is neither a sexuality nor sterility.

*blinks* Going a bit off of topic of this thread. But even if I marry, I still have no reason it "doing the deed".

And that seems to be the trust on all the Asexual forums I've frequented in the past. So I'm not sure where you get the "predominantly".

Of course, if you just mean in the game, then you can ignore the above.

[Loci]

I was talking about the game. Unproductive creatures in Dwarf Fortress are roughly 80% unwilling to marry and 20% alternate sexuality (and 0% sterile).

I have no idea what the numbers are in real life.