I'm keeping my first Messor Barbarus colony since summer '22. They are now in hibernation, not much movement, no eating. At least that's what I think.
Since November, when it is becoming colder (8-15 degr C), once a week, one worker dies.
I started with approx 30-40 workers, now only 20 remaining...
Is this normal?
The humidity inside the nest is at all times good and they have water to drink. I even had one soldier for a month or two. :-(