To dream about ducks suggests either a spiritual liberty, if they are flying, or the subconscious, if they are swimming. Being that ducks can do several things, such as walk, fly, and swim, this could be indicative of your ability to adapt to different circumstances. Also, this dream may be suggesting that you are in danger of being trampled by a colleague or friend, as in 'sitting duck.' You may also be trying to avoid a situation, as in 'ducking' it.
To dream about a white duck indicates a deception or lie.