Jumping is a form of movement to get from one level of elevation to another in the Conker series. Like most games, the A Button is used to jump, which is the button used in both Conker's Bad Fur Day and Conker: Live & Reloaded.
The normal jump in both games is used to get to higher ground and to cross gaps. In Conker: Live & Reloaded, pressing down on the left thumbstick is also an alternate way of jumping.
The High Jump is a jump which can get Conker to higher points of elevation that the normal jump cannot. This jump is executed by pressing A while holding the Z Button in Conker's Bad Fur Day, or the Right Trigger in Conker: Live & Reloaded.