In folklore, the movements of a stork are said to be indicative of what is likely to happen in future, different types of movements associated with different kinds of events.
In several western counties it is believed that if a stork is seen on the roof of a house, a baby birth is likely to occur in that house soon, and hence the belief that babies are brought by storks.
The above belief was supposed to have originated in some Dutch villages, where an increase in population led to an increase in houses; which in turn led to an increase in babies, and at the same time an increase in storks because of more nestable roofs. This phenomenon led to the wrong conclusion that the more the storks in a place, the more the babies. How sweet.