Rheas tend to be silent birds, except when they are chicks or the male seeks a mate. During the breeding season, the male will attempt to attract females by calling. This call is a loud booming noise.

Greater rheas are polygamous, so males have many different mates. Females lay their eggs—one every other day for a week or ten days—in a ground nest of the male's design.

11 小时之前 · They also have a unique way of raising their young. Male rheas take on the role of incubating the eggs and caring for the chicks, which is quite rare in the bird world. Their diet is diverse, ranging from plants and seeds to insects and ... The greater rhea is the largest bird in South America, standing up to 5 feet tall and weighing up to 88 ...

The greater rhea (Rhea americana) is a species of flightless bird native to eastern South America. Other names for the greater rhea include the grey, common, or American rhea; ema ; or ñandú (Guaraní and Spanish).

Reproduction of the Rhea. Rheas are polygamous, and breed with multiple partners. Males build nests, mate with females, and the females lay their eggs in his nest. After they breed, the female moves on to another male, and lays her eggs in his nest as well.

Males are more apt to be aroused than are females. At times a resting rhea is completely unresponsive to the approach of another, but often it reacts with a Head-forward threat display. As the intruder approaches to within 20 feet or so the resting bird becomes alert and carefully watches the other.

2008年6月15日 · A large, flightless bird, the rhea is native to South America and is part of the family of birds known as ratites, which also includes the ostrich, emu, kiwi and cassowary.

The male rhea is slightly larger than the female. Greater Rheas are omnivorous, but prefer broad-leaved plants and clover as well as several kinds of seeds, roots and fruit. They also eat insects and small animals like lizards, frogs, small birds and snakes.

Males have a dark brown crown and blackish lower neck and upperparts. Females have lighter plumage. Juveniles look similar to adults but are smaller. Inhabits open areas with scattered trees and shrubs, such as savannas and pampas, where it can gather in large groups. The males are responsible for incubating the eggs and looking after the chicks.

Rheas have long necks; long, powerful legs; and shaggy gray feathers. The male rhea mates with as many as 8 females. Each female lays as many as 20 eggs in a single nest. The male incubates the all the eggs for 35-40 days. Male rheas have been known to …