Why do more ducks fly south than in the winter?

Question

Go ahead......try to wrap your head around this conundrum.

Answer 1

so they don't freeze their tail feathers off. and because they can without the airline hassles.  I would fly south if I had wings to avoid winter.

Answer 2

Warmth, go to areas where vegetation is still available, also follow the migrational and gestational cycles of fish and other food.

Answer 3

No conundrum here.  They fly south by instinct to get out of the cold where there is little food for them, to the warm where there is lots of food.