Adélie penguins seem to have passed a portion of the mirror test, in which animals that see their reflection in a mirror appear to recognise that they are seeing themselves and not another individual. The researchers who ran this experiment say the findings suggest these penguins may have a degree of self-awareness, but others aren’t convinced.
The mirror test, developed in the 1970s, traditionally includes marking an area of the animal’s body, such as the forehead, and seeing if the animal then touches or investigates…