They are about 4 feet tall. In a remote location once, a juvie ran up to me and solicated food. After a few seconds, it appeared to realize it's error and trotted back into the cattails. It reached to about my neck but still to young to fly.
TROIS HOW FORTUNATE YOU ARE! HERE IN THE NORTHEAST, THEY ARE SO CAUTIOUS. WE HAVE SOME ALONG THE SHORE LINE BUT THEY FLY TO ANOTHER SPOT QUICKLY IF THEY NOTICE ANY MOVEMENT OR SOUND. YOUR PIC IS GREAT, YOUR MOMENT WITH THE YOUNG HERON PRICELESS!!