a squirrel hammering is black
nailing is pounding. black_squirrel is tree_squirrel. grey_squirrel is squirrel. eastern_gray_squirrel is tree_squirrel. african_bush_squirrel is squirrel. long_clawed_ground_squirrel is squirrel. blackcock is black_grouse. african_striped_squirrel is squirrel. hammering is hitting.