I recently acquired a tame blue jay in a cage that I bought from the Elven trading caravan.

I have a reasonable egg production farm up and running with domestic egg laying creatures, like ducks and turkeys, and I was wondering if I would be able to add to this with my recent acquisition.

I noticed in the raws that blue jays (and a number of other vermin creatures) have the [LAYS_EGGS] configuration value, but because it is technically considered vermin and there is no mention of this type of creature on the df wiki page for egg laying animals, I am unsure whether it will actually lay eggs.

If I provide a nest box for a tame, egg-laying vermin, will it lay eggs that I can cook into food for my dwarves?

  • Vermin have meat, leather, and eggs, but such reagents are not actually harvestable in-game. Vermin may be due for a rewrite soon, as there are extant creatures in-game that are smaller than some vermin (chickens). Sep 20, 2011 at 17:09
  • 2
    Awesome title! I totally envisioned dwarves harvesting roach eggs or something.
    – andronikus
    Sep 20, 2011 at 21:25
  • I think i've embarked with roach brains before...
    – Russell
    Mar 19, 2012 at 15:38

1 Answer 1


Vermin are handled rather "specially" in that they are spawned from nothing and de-spawned again, and that they can't really run around freely even when tamed (though you can try dumping them - which leads to your local vermin hunter population making a quick job out of them and some oddities with the unit display). As such, even if they could lay eggs, they'd never reach the nest box by themselves, and certainly won't stay there hatching anything.

(Version 0.31.25)

  • 1
    So even though it's tame, there's not really much use for it?
    – bcpettifer
    Sep 20, 2011 at 8:59
  • 3
    You can add it to the list of pets available for adoption, and if there's some dwarf who likes them, they'll (eventually) adopt them, carry them around in their inventory, and get happy thoughts because of it. Sep 20, 2011 at 9:17

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .