Amazing footage! That looks like a huge (do you know what kind?) bulge/fish caught in the bird’s throat! So the hungry Heron managed to fully consume (alive?!) it all okay? I’m guessing the fish wouldn’t have much a day at this point 😅! Still, I wonder, does the large fish stand any chance of escaping if eaten in that condition? Maybe it can turn around inside the elastic throat/stomach and has a chance of survival here.