Rotating 16 birds through the positions in a four-duck row, the researchers found outer birds half-asleep during some 32 percent of dozing time versus about 12 percent for birds in internal spots.

What the trade allowed them to do was replace all four players who were killing them, and fill three of the spots with solid to excellent productivity.

With the Opera House and the Harbour Bridge in its backyard, there are few Sydney spots that boast a better view than the Four Seasons Hotel Sydney.