I have a colony of V. pergandei of maybe 500+ around 1 - 1.5 years old. At any given time there could be about 30-40 workers foraging in the outworld. Recently I noticed a number of them in the outworld walking a bit funny, probably 5-10. and another 5-10 are probably dead or dying. I suspect the ones walking funny will end up dying. The ants in the nest don't seem to be experiencing that.
Is this something you'd be concerned about? or since the older ants are usually the ones foraging, they are merely reaching the end of their life span?
Thanks!