Rhea (bird) many people. The gaucho people traditionally hunt rheas on horseback, throwing "bolas" or "boleadoras" — a throwing device consisting of three balls joined by rope — at their legs, which immobilises the bird. The rhea is pictured on Argentina's 1 Centavo coin minted in 1987, and on the Uruguayan 5 peso coin. Rhea (bird) The rheas () are large ratites (flightless birds without a keel on their sternum bone) in the order Rheiformes, native to South America, distantly related to the ostrich and emu. Most taxonomic authorities recognize two extant species: the greater or American rhea ("Rhea americana") and the
Flightless cormorant Flightless cormorant The flightless cormorant ("Phalacrocorax harrisi"), also known as the Galapagos cormorant, is a cormorant native to the Galapagos Islands, and an example of the highly unusual fauna there. It is unique in that it is the only cormorant that has lost the ability to fly. Once it was placed in its own genus, "Nannopterum" or "Compsohalieus", although current taxonomy places it in the genus with most of the other cormorants, "Phalacrocorax". Like all cormorants, this bird has webbed feet and powerful legs that propel it through ocean waters as it seeks its prey of fish, eels, small octopuses,