What is that Call? What is that Bird?

I went on a bender of birding visits to local ponds and truly enjoyed my time. Now I am broke and staying put until the next pay check.Though the visits were not always successful in the way that I wanted, there was always something to discover. At one point, I heard a call that I knew was somewhat familiar, a kind of “witcha-witcha-witcha, whitcha” and I kept trying to spot whatever it was. The sound came from the  thickets surrounding the marsh. This is what I captured-can anyone help me to ID it? I live in central Alberta, Canada. Not a great shot  and not sure that the sound belongs to this particular bird. Any suggestions?