Snowy egret and tri-colored heron on driftwood in lake

Best I can tell, this snowy egret and tri-colored heron are very good friends. I see them fishing together all of the time. They don't seem to talk to each other much -- at least not aloud -- yet they communicate very well. I think you could say that there's a comfortable silence between them -- the kind that comes about when you have sent much time in the company of someone.