20 - 23 cm. Bill sawing, short, robust, slightly curved, blackish brown. Crown dark brown, buff collar with black spots. Brown streak behind the eye until collar. Back and wings streaked with black, rufous and pale brown-gray. Rump olive brown or gray with black vermiculations. Lower belly with dark spots. Legs short and robust leaden color fingers and nails very long. Males and females are different. Male: 180 - 266 g. Eyebrow, cheeks, sides of neck and throat tawny orange. Chest and belly grayish-brown with white streaks s. Female: 168 - 206 g. Sides of head gray becoming white on throat. Chest and flanks cinnamon with white streaks. Immature is similar to female but sides of head cinnamon-buff in males, and less buff in females.