Overwhelmed

I thought I had discouraged the grackles.  Or had I?  Within days of restoring my feeders, I found myself yesterday morning surrounded by the nasty birds.  There were dozens in surrounding trees.  Was this a marauding wave tipped off by the family group I had supposedly run off?  or was it a random assault by a roving band?  Suffice to say I took the feeders down immediately and hoped for the best.  Two days later they have not been seen, but I must wait out any spies and sentries.  It's going to be a tougher wait this time as so many "bird bikers" know our coordinates.  I feel overwhelmed!  Ack!