Two Kelenken terror birds come down to a lake to drink.

ANIMAL THEMES • ANIMAL • APEX PREDATOR • ARBOL • ARGENTINA • ARTWORK • AVES • BEAK • BIRD • BIRD: BIRDS OF PREY • BIRDS OF PREY • BIRDS • CARIAMIFORMES • CARNIVORE • CENOZOIC ERA • COLOR IMAGE • COLOUR IMAGE • CREATURE • DAY • DIGITALLY GENERATED IMAGE • DINOSAUR • DINOSAURS • DRINKING • EVOLUTION • EXTINCT • FLIGHTLESS BIRDS • FULL LENGTH • FULL-LENGTH • GRAZING • HABITAT • HORIZONTAL • ILLUSTRATION • ILLUSTRATIONS • KELENKEN GUILLERMOI • KELENKEN • LAKE • LATERAL VIEW • MIOCENE • MORPHOLOGY • NATURAL HISTORY • NATURAL SCIENCES • NATURE STUDY • NATURE • NEOZOIC ERA • NO PEOPLE • OUTDOOR • OUTDOORS • OUTSIDE • PALAEONTOLOGY • PALAEOZOOLOGY • PALEOBIOLOGY • PALEONTOLOGY • PALEOZOOLOGY • PAST • PHORUSRHACIDAE • POND • PREDATOR • PREHISTORIC ERA • PRIMEVAL • PRIMITIVE • PRIMORDIAL • RAPTOR • REPTIL • REPTILE • REPTILES • SCIENCE • SCIENCE: EVOLUTION • SIDE VIEW • SPECIES • TERROR BIRDS • TREE • TREES • TWO ANIMALS • VERTEBRATE • WATER'S EDGE • WILDERNESS • WILDLIFE • WITHOUT PEOPLE • ZOOLOGY