What defining action gave the English Springer Spaniel breed its name?

Answer

Springing game from dense cover to flush it into the air

The definitive purpose that established the breed's name involved their specialized hunting technique. They were required to work ahead of the shooter, using their energy and drive to flush or 'spring' hidden game, such as pheasants or woodcock, out of thick cover so that the shooter could take a clean shot. This necessity for flushing dictated much of the breed's inherent high-energy temperament and intelligence developed over generations.

What defining action gave the English Springer Spaniel breed its name?
animalDogbreedlineagespaniel