  Over the past decade it has become apparent that a class of `bursting
pulsars' exist with the discovery of PSR J1752+2359 and PSR J1938+2213. In
these pulsars, a sharp increase in the emission is observed that then tends to
systematically drop-off from pulse-to-pulse. In this paper we describe the
discovery of such a relationship in high-sensitivity observations of the young
(characteristic age of 90,000 yrs) 0.33 s pulsar B0611+22 at both 327 MHz and
1400 MHz with the Arecibo radio telescope. While Nowakowski previously showed
that B0611+22 has mode-switching properties, the data presented here show, for
the first time, that this pulsar emits bursts with characteristic time-scales
of several hundred seconds. At 327 MHz, the pulsar shows steady behaviour in
one emission mode which is enhanced by bursting emission slightly offset in
pulse phase from this steady emission. Contrastingly at 1400 MHz, the two modes
appear to behave in a competing operation while still offset in phase. Using a
fluctuation spectrum analysis, we also investigate each mode independently for
sub-pulse drifting. Neither emission mode (i.e. during bursts or persistent
emission) shows the presence of the drifting sub-pulse phenomenon. The bursting
phenomena seen here appears to be a hybrid between bursting seen in other
pulsars and the bistable profile illumination behaviour reported in two other
pulsars by Rankin et al. Further examples of this cross-frequency behaviour are
required, as this phenomenon may be quite common among the pulsar population.
