Are your gerbils thumping (pounding both hind legs on the ground)?
Are your gerbils grooming?
Are your gerbils make high-pitched squeak?
Are your gerbils chewing/gnawing?
Are your gerbils burrowing?
This is something gerbils do when they are excited or stressed, as a warning to other gerbils. Often, if one gerbil is startled and begins thumping, others in the enclosure or room will also begin thumping. The infectious nature of the thumping means that if some activity in the home produces a rhythmic thumping or clicking type noise, the gerbils may join in. Young gerbils may do quite a bit of thumping, but often it seems that it is just a learning activity rather than a danger warning. Thumping is also an important part of the mating ritual.
Gerbils will often groom themselves, including one another. As well as the benefits to their coats, this is an important part of their social interaction. They also appreciate being offered sand for taking a dust bath.
Gerbils are known to make a high-pitched squeak or chirping sound —but mainly as youngsters. Adults usually vocalize only when playing, excited or stressed.
Gerbils, like most other rodents, are avid chewers and will chew their way through cage furnishings somewhat regularly. It is important to provide appropriate chewing toys, such as wood blocks and branches, to allow the gerbils to indulge in this natural activity.
In the wild, gerbils live in a complex system of tunnels and burrows, so it is nice to allow the gerbils enough room to burrow in their enclosure. A deep layer of wood shavings combined with hay will provide some room for burrowing.
Gerbils have a scent gland on their abdomen, and this is used to mark items in their territory. Gerbils that rub their stomachs on their cage furnishings are simply marking their territory.
https://www.thesprucepets.com/gerbil-behavior-1236821

Sreten null
Hi! I’m Sreten Filipović. I graduated from the Faculty of Agriculture at the University of Belgrade, with a master's degree in Environmental Protection in Agricultural Systems. I’ve worked as a researcher at Finland's Natural Resources Institute (LUKE) on a project aimed at adapting south-western Finland to drought episodes. I founded a consulting agency in the field of environment and agriculture to help farmers who want to implement the principles of sustainability on their farms. I’m also a founding member of the nonprofit organization Ecogenesis from Belgrade whose main goal is non-formal education on the environment and ecology. In my spare time, I like to write blog posts about sustainability, the environment, animal farming, horticulture, and plant protection. I’ve also published several science-fiction short stories.
You can find me on LinkedIn at https://www.linkedin.com/in/sreten-filipovi%C4%87-515aa5158/