RHEA

either of two species of large, flightless birds in the family Rheidae, order Rheiformes. They are native to South America and are related to the ostrich and emu. The common rhea (Rhea americana; see ) is found in open country from northeastern Brazil southward to Argentina, while Darwin's rhea (Pterocnemia pennata) lives from Peru southward to Patagonia, at the tip of the continent. Both species are considerably smaller than the ostrich; the common rhea stands about 120 cm (4 feet) tall and weighs about 20 kg (50 pounds). The common rhea has brown or gray upper parts and whitish underparts, while Darwin's rhea is somewhat smaller in size, and its brownish plumage is tipped with white. Rheas are distinguished from ostriches by their three-toed feet (those of the ostrich have two), their lack of fine plumes, and their brownish colour. The birds frequent open, treeless country and evade predators by running. They are omnivorous and can utilize a wide variety of plant and animal foods. Rheas do not form lasting pairs, and males incubate the eggs and raise the young. Moreover, the birds are polygamous, i.e., the male broods the eggs of several females laid in one nest. The females lay up to 50 eggsabout 13 cm (5 inches) longin a shallow, grass-lined nest dug by a male in the ground. He then incubates the eggs, and the chicks hatch in about 6 weeks and are herded about by the male for another 6 weeks thereafter. Rheas frequently associate with deer or guanacos, forming mixed herds like those of ostriches, zebras, and antelopes. in Greek religion, ancient goddess, probably pre-Hellenic in origin, who was worshiped sporadically throughout the Greek world. She was associated with fruitfulness and had affinities with Gaea (Earth) and the Great Mother of the Gods. A daughter of Uranus (Heaven) and Gaea, she married her brother Cronus, who, warned that one of his children would be fated to overthrow him, swallowed his children Hestia, Demeter, Hera, Hades, and Poseidon soon after they were born. Rhea concealed the birth of Zeus in a cave on Mount Dicte in Crete and gave Cronus a stone wrapped in swaddling clothes. This he swallowed in the belief that it was Zeus. Subsequently, Cronus was vanquished by Zeus and was forced to disgorge the swallowed children.