Osasuna completed the rout on the hour when Moha completed a counter-attack by heading in at the far post after Valdo raced down the wing and clipped in a perfect pass.
But Dr Dial wanted to be sure, so he compared the accomplishments of normal partridges with birds that had their wing feathers clipped to half their normal surface area, and to even less fortunate fowl whose main flight feathers were entirely plucked.
The back of the Mercedes clipped the front of the Ferrari, knocking Massa's front wing, with the Brazilian having to take evasive action and briefly going across the run-off area.