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On top of their annual migration to warmer climes and back again, Canada Geese may also take on a moult migration. What is the purpose of this trip?
A. Flying allows the geese to lose their flight feathers more easily than preening alone.
B. They seek out their breeding grounds.
C. Since they can’t fly while they wait for their flight feathers to grow back, they need to get to a spot with a lot of open water, where they can escape predators.