The machine is a movable construction, that is able to knit bird nests.
Placed in the city it collects their noise.
The mechanism is controlled by noise level, each noise impact creates a pattern on the habitat.
These patterns can be understand as scars, twice as thick as the regular pattern, the surface tries to protect its fragile inhabitants.
The houseing is specialised to repopulate smaller city birds, the machine itself acts as a translator, bringing nature back to the city.