Burt and Ernie are Emus, the Australian equivalent of the African Ostrich. Emus are farmed for their eggs, their meat and the oil from their feathers, which is used as an arthritis treatment. The oil is milked off of the feathers, the birds aren't harmed to harvest it. I have no idea which bird is which, so I'm just going to post a bunch of picutres of both of them.

Interesting hair-do

There really are two of them.

They can see where they've been

Sorry about the blurry picture - they have
really cool feet. Emus can run 45
kilometers per hour.

They have oily feathers that look like hair

Their eyes are bigger than their brains. Really!