Right, let's put this to bed then shall we (and potentially incur the wrath of Robosaurus)?
If the picture of the eagle I posted had a 7' wingspan, then it's safe to assume that it's 17.5% smaller than a metal eagle with a 40' wingspan, yes? Agreed?
So, we don't know if the metal eagle is actually 40 foot or not, but we do know that the two men will be roughly the same height (within a few inches).
So if we shrink the person holding the 7' wingspan eagle by 17.5%, then put him next to the guy next to the metal eagle (head to head), then if they're the same size then the metal eagle has a 40' wingspan, QED?
As you can see, he is significantly smaller if reduced to 17.5% of his size. In fact, he needs to be reduced just 21% to be roughly the same size as the person in the metal eagle photo.
That would give the metal eagle a wingspan of around 33' (21% is 4.76 approx smaller so 7' x 4.76 gives us 33').
Therefore, either the metal eagle pictured with the bloke isn't the Dollywood eagle, or the one they have bought only has a wingspan of 33', not 40'.
This solves nothing of course except that Robosaurus was right!