Page "Rhea (bird)" Paragraph 17

Rheas tend to be silent birds with the exception being when they are chicks or when the male is seeking a mate.

During breeding season, the male will attempt to attract females by calling.

This call is a loud booming noise.

While calling like this, they will lift the front of their body, ruffle their plumage, all while keeping their neck stiff.

They will then extend and raise their wings, and run short distances, alternating with their wings.

He may then single out a female and walk alongside or in front of her with a lowered head and spread wings.

If the female notices him, then he will wave his neck back and forth in a figure-eight.

Finally, a female may offer herself and copulation will commence.