A heron with red eyes and a black-and-gray back, often active from evening onward.
Adults are about crow-sized, with a black-and-gray back and red eyes. Young birds are brown with white spots.
It often rests in grassy or wooded thickets by day, becomes active from evening, and breeds in colonies in forests from Honshu to Kyushu.
It takes about three years to acquire adult plumage. The eyes gradually change from yellow to red as the bird matures.
An extinction-risk assessment has not been added yet.