Waterfowl are and have been, at least among those who hunt them, been categorized into either the dabbling duck clan or the diving ducks based for the most part on how they feed . Dabbling ducks ...

Gulls have learned to follow diving ducks and take the bottom-dwelling mussels that the ducks bring to the surface, a food source that would otherwise be inaccessible to them. Gulls are one of the ...