Great Blue Herons are known for stealthy, slow hunting.
This fellow defied the norm when he caught and swallowed three fish in a matter of two or three minutes.
The long feather sticking up is part of the breeding plumage.
He is likely eating for a family. The adults fly back to the nest then regurgitate the food for the chick(s).
It will take a lot of these little fish to sustain the adult and chicks.