The species lives on sandy mud with small gravel.

She crouched in starting position on the track, and for a second or two her fingers pushed into the small gravel.

Every bit of dust and dirt smaller than medium-sized gravel became airborne.

The bottom is made up of small gravel or rubble.

The deep, slow-moving water generally has a bottom of silt, sand, or small gravel.

Both sand and small gravel are also important for the manufacture of concrete.

Each has a small, gravel covered backyard, space enough for one donkey, or maybe a sheep and a few pigeons.

These trays may be set on a bed of small gravel.

Fortunately, what fell on them was small gravel for the most part.

Adults are also big enough to roll small gravel and search for prey that way.