The Bluebird is a rare bird which only resides on Sodor. One warm day, the bird made a nest in Thomas' funnel. When it flies away, Farmer Collett decorates his old oil tank to look like Thomas and moves the nest in an effort to fool the bird. The bird happily lives on Farmer Collett's Farm. The bluebird is fooled and Thomas can go on his way, but not before naming the old oil tank Bluebird, after the rare bird.