Why ants gathering on terrarium lid.

Saga pedo

Arachnopeon
Joined
Jan 27, 2025
Messages
18
Hi, does anyone know why my ants (Camponotus vagus) are gathering in a small group on the lid of their terrarium?
They have water and food and are just awakening from hibernation, barely exploring their fishbowl arena.
When I disturb them they all rush back into their nest, but otherwise they sit motionless right next to each other. It is a small colony, approximately 100 ants with plenty of space to expand .
I'd like to hear your thoughts about what could cause this abnormal behavior

In the Photo i axidentaly disturbed them so most left.
 

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WhiteMoss

Arachnosquire
Joined
Apr 26, 2022
Messages
85
If they're coming out of hibernation, then that's likely the warmest spot of their set up. Just trying to absorb some heat most likely.
 
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