However, some researchers have attempted to estimate the number of wild ducks worldwide. One study conducted by the conservation organization Wetlands International estimated that there were approximately 1.6 billion waterfowl in the world, and in this number ducks represent about 75% of the total waterfowl, around 1.3 to 1.4 billion ducks worldwide.
This number includes various duck species, such as mallards, teals, pintails, and more. However, it should be emphasized that these estimates can vary depending on the specific study and the data sources used.