Hearing ducks quack–quack in dreams is a good omen.
Dream dictionary: Quack-Quack dream meanings
To see a quack doctor in your dreams, denotes you will be alarmed over some illness and its improper treatment.
Dreaming you take quack medicine, shows that you are growing morbid under some trouble, and should overcome it by industrious application to duty. To read the advertisement of it, foretells unhappy companions will wrong and distress you.
To dream about quack doctors is unfavorable omen, which brings temporary problems.
Having to do with boasting persons. 64.
…means that she will beget a boy. If a female bird sits in her lap in a dream, it means that she will beget a girl. Large or predatory birds in a dream represent kings, presidents, leaders, tyrants, men of knowledge or merchants. Water birds, sea gulls, etcetera, represent honorable people who rose in rank in two spheres, the sphere of water and that of the air. They also could mean a journey. If they quack in the dream, they represent lamenting or crying. Singingbirds in a dream represent musicians and singers. To see a flock of birds in a dream means money and power and particularly for someone who tends them or cares for them. Seeing birds flying over one’s head means gaining authority and power. If one sees birds flying inside his house or shop in a dream, it means angels. If a bird flies into one’s hand…
To dream of taking quack nostrums means that you should be beware.