There are plenty of great blue herons that hang out in Juanita Bay.  While they are quite calm most of the time, they do get a little aggravated if they intrude on each other’s turf.  If one flies close to another, a little spat will ensue.  What is hard to tell is who is the one that is the aggressor and who is the one on the receiving end.  A pair of them ended up circling and wheeling around over the water one evening.  I wasn’t entirely sure how it had started but they were coming around on each other repeatedly.  Eventually they went in different directions and it was all over.  I’m not sure if either of them ended up in the space that they were fighting over!