Is it all of their brood or only one of the three? In the pictures above, most seem to be carrying pupae but a few are carrying larvae. Strange.
Do you ever see them reentering the nest with brood? Is there a trail that you could follow?
They aren't any trails that the ants are following, their all just standing outside the nest entrance, most of the time it looks like there's about 100-200 ants out with about half carrying brood, the ones carrying brood, are just standing still in groups, they reenter the nest with the brood after about 15-30 minutes. If the ants are out again tonight I can try study their behavior more.
Edited by Froggy, May 26 2020 - 10:33 AM.