The answer to 'why is my tick nests' is that you likely have a tick infestation on your property. Ticks can create small nests or hiding spots in areas with tall grass, leaf litter, or other vegetation. These nests provide ticks with shelter, food sources, and a place to lay their eggs.
Tick nests are often found in shaded, humid areas around the perimeter of your yard, near wooded or grassy borders, or in other undisturbed spots. Signs of a tick nest include small mounds of dirt, leaves, or other debris, as well as the presence of adult ticks and tick larvae.