Long-duration periods with southward IMF often display a wealth of the fast bursty flows (BBFs) in the plasma sheet, part of them are visible as the auroral streamers and therefore could be monitored by optical means. For couple dozen isolated streamers we confirm statistically the spatial-temporal association of streamer intrusions with the plasma injections to the geostationary orbit. Also, for one long active period with many streamers monitored by Polar UV imager we show that the streamers end their development forming the bright spot in the equatorward oval which continues to exist for several tens minutes drifting eastward and westward as dictated by the convection flow. These results imply that during active times considerable amount of energetic plasma is injected into the inner magnetosphere with the bursty bulk flows. This can have important implications, particularly, for pumping fresh energetic particle population into the radiation belt.