I got rid of all the older norns and hatched all the eggs and after a while I don't see many holding eggs, it's very likely to be learned/addictive and may be situational, but while the older norns were still around they were holding eggs for hours on end.
EDIT: Some of the newer norns are getting overly attached to eggs now, like their ancestors.
Are these Abyss Dragons? They sometimes get weird about eggs, even in the current uploaded version, though more so in the v2.1s I've been working on. They like to grab prey, and that often generalizes to enjoying carrying stuff around in general, which never bothered me because, well, avariciousness, possessiveness, and hoarding are dragons traits after all. :p In the v2.1s I've got it so they tend to make discrete piles of eggs nearby the group rather than scattering them willy-nilly around the ship, but they do still handle them a lot. And the older version lacks those fine tunings so they just get weird sometimes.
It's possible to take eggs and other stuff away from them, tho', FWIW. It can be a challenge, but it's usually not that difficult, especially if it's a well grown egg.
Conclude with killer catchphrase. (Lurhstaap)
"This is not knowledge -
this is information!"
New Model Army, "Courage"
They have a very weak instinct to get eggs if bored triggering at adolescence but all other boredom instincts should immediately override it if there's anything interesting around. it's just there to make them pick up eggs laid in bad places and take them back to the incubator.
The stimulus boredom reduction was untouched but maybe it's still a little too rewarding for them so i'll reduce it.
I'm looking for some feedback based upon the test Creatures I've posted up for download. Would people be interested in me remaking the entire immune system to be more realistic and with longer lasting immunity?
Whatever I end up doing, I want to make a significant push forward with the next iteration of these genomes.