LifePenguins have rare ability to recognise each other's faces and voices African penguins identify each other using unique features of their physical appearance and vocal calls – making them the second group of birds after crows known to do so ¿ìè¶ÌÊÓÆµ
VideoWatch cuttlefish migrate together in a defensive line with a lookout New footage reveals that groups of wild cuttles form shoals to migrate, suggesting they are more social than we thought. Video