Size comparison of three of the largest terror birds.

ANIMAL FUR • ANIMAL LEGS • ANIMAL THEMES • ANIMAL • APEX PREDATOR • ARCHAEOLOGIST • ARCHAEOLOGY • ARCHEOLOGY • BEAK • BIPED • BIRD • BIRD: BIRDS OF PREY • BIRDS OF PREY • BIRDS • BIZARRE • CARIAMIFORMES • CARNIVORE • CENOZOIC ERA • CHART • COLOR IMAGE • COLOUR IMAGE • COMPARISON • CONTRAST • CREATURE • DIGITALLY GENERATED IMAGE • DINOSAUR • DINOSAURS • EVOLUTION • EXTINCT • FEATHER • FLIGHTLESS BIRDS • FRONT VIEW • FULL LENGTH • HORIZONTAL • HUMAN REPRESENTATION • ILLUSTRATION • ILLUSTRATIONS • KELENKEN GUILLERMOI • KELENKEN • LARGE • MIOCENE • MORPHOLOGY • NATURAL HISTORY • NATURAL SCIENCES • NATURE STUDY • NEOGENE • NEOZOIC ERA • NO PEOPLE • PALAEONTOLOGIST • PALAEONTOLOGY • PALAEOZOOLOGY • PALEOART • PALEOBIOLOGY • PALEONTOLOGIST • PALEONTOLOGY • PALEOZOOLOGY • PART OF A SERIES • PAST, THE • PHORUSRHACIDAE • PHORUSRHACOS LONGISSIMUS • PHORUSRHACOS • PLEISTOCENE PERIOD • PLÉISTOCÈNE • POSTER • PREDATOR • PREHISTORIC ERA • PRIMEVAL • PRIMITIVE • PRIMORDIAL • QUATERNARY • RAPTOR • REPTIL • REPTILE • REPTILES • SCALE • SCIENCE • SCIENCE: EVOLUTION • SIDE BY SIDE • SIZE • SPECIES • STANDING • TERROR BIRDS • TERTIARY • TEXT • THREE ANIMALS • TITANIS WALLERI • TITANIS • UGLINESS • VERTEBRATE • WESTERN SCRIPT • WILDLIFE • WITHOUT PEOPLE • ZOOLOGY