Eremopezus more than a large emu—and more than 10 kg—slightly more than the largest living storks (which reach over 150 cm in height) and the shoebill. The general limit for weight in flying birds is at about 25 kg, the exceptional "Argentavis magnificens" with its size and weight of a good-sized adult human notwithstanding as it evolved under unusual ecological conditions. Large males of the kori bustard ("Ardeotis kori") and great bustard ("Otis tarda") are perfectly capable of flight, while weighing in excess of 20 kg. A wing loading of c. 25 kg/m is the known limit for bird flight under
Solidago tarda Solidago tarda Solidago tarda, commonly known as Atlantic goldenrod, is a rare North American species of goldenrod in the sunflower family. It is found along the Atlantic coastal plain from New Jersey and Alabama, though nowhere very common. "Solidago tarda" is a perennial herb up to 180 cm (6 feet) tall, with a branching underground caudex or rhizomes. Leaves are elliptic or egg-shaped, up to 35 cm (14 inches) long near the base of the plant, shorter farther up the stem. One plant can produce as many as 50 small yellow flower heads in a narrow, elongate array at the