The short-tailed shearwater is a most amazing bird. They all nest on some little island in the South, the entire species laying their eggs on the same day. They feed their young on anchovies until they (the young) are too stuffed to move, at which point all the adults fly off to some island off the coast of Siberia. By the time the young have starved enough to move they have also grown wings, and off they go, joining their parents on a little island on the other side of the world... and nobody knows how they know the way...!