Rhea

Rheas belong to the family ratites.

There are two species of rhea that are found in South America in grassland

They are the Greater and Lesser Rhea.  Rheas are tall, long-legged birds, well adapted to a ground lifestyle.

They are good runners. and go to speeds of up to 60 km/h.

Their body is grayish-brown, and the sexes are not very dimorphic, though males develop a black ring on the neck.

 Their feathers lack hooks, making them unusually soft.

Unlike the similar-looking ostriches, the head, neck, and thighs of rheas are feathered.

They do not have tail feathers.