As the name indicates, yellow meadow ants live in rugged meadows. They build compact anthills. They live underground as long as the area is open enough that the sun is able to warm up the ground. Yellow meadow ants are even found in salt marshes, such as the Slufter on Texel. These insects survive tidal flooding by producing air bubbles in the nest which block out the water. Yellow meadow ants live off of lice found on grass roots. That is why you always find the anthill overgrown with grass.