I have a great respect for great blue herons. They are quiet, efficient and solitary stalkers for a living and don’t leave much evidence of their passage. They seem to prefer seclusion away from the hustle and bustle of man. They are death to the large resident frog population of Singleton Lake but everyone has to eat and as long as everything is in balance, it is good. For me, their arrival marks the start of spring and their departure, winter.