Ice Fishing Heron

Today we had a visitor to the pond.  It's a Blue Heron that comes on a regular basis, however, since it has turned cold we haven't seen it around.  The pond has a skim of ice but the weather warmed up a bit and shrunk from around the edges.  It was interesting watching it in action, wondering how it could see through the ice but I saw it strike and a fish dart away after being missed.  The fish looked as if it was maybe 4 to 5 inches.