Yes. One of the next two polls will focus on quality of forage. And tractoring is a "part of" method, as is everything but truly feral ranging.
I don't want to sidetrack, but tractoring has the disadvantage that the birds can only snack on what's w/i the area of the tractor. Which often means a virtual monoculture - big risk of dietary imbalance because its all substantially "the same". OTOH, tractoring has the advantage that it keeps the birds from gorgining by choice (and thus imbalancing the diet) in the forage when a particular treat is at height of production - like sunflowers, numerous berries, various grains. We'll get that far in these polls, eventually.