Great Blue Heron  Ardea herodias
Subspecies:
The distinctive population in the Florida Keys, formerly considered a separate species–Great White Heron– is the subject of a detailed blog post here: “Great White” Heron – not just a color morph
The distinctive population in the Florida Keys, formerly considered a separate species–Great White Heron– is the subject of a detailed blog post here: “Great White” Heron – not just a color morph