A feather duster is like a little brush made out of bird feathers that you can use to clean things like shelves or furniture. Just like how you use a brush to comb your hair, you can use a feather duster to gently swipe away dust and dirt from surfaces. The soft feathers on the duster trap the dust so it doesn't fly around in the air. After using the feather duster, you can shake it out or tap it on the ground to get rid of the dirty dust and start cleaning again.