Do geese have to preen themselves?

Yes, geese do need to preen themselves as part of their grooming behavior. Preening helps to clean their feathers, remove dirt and parasites, and distribute natural oils from a gland near their tails, which keeps their feathers waterproof and in good condition. This maintenance is essential for their insulation and buoyancy while swimming. Regular preening ensures that geese can fly effectively and stay healthy.