Big Bird is hurt because Luis, Gordon and Maria won't let him help fix a door hinge. They tell him he's not old enough.
To prove that he's old enough to do anything, Big Bird wears a gray beard and carries a cane. Luis, Gordon and Maria agree to do something that old people do -- talk. Big Bird gets bored, and goes off with the Kids.
Luis, Gordon and Maria offer to help Big Bird fix his nest. In the end, Big Bird agrees, and gives them instructions: "Now just take these little sticks... chew them up good... and then be sure to mix them with the right amount of mud."