This bird is grey-blue with black stripes over the eyes and black
streaks on its white foreneck; the bill is yellow. Ornate plumage
on the head, neck and back decorate the breeding adult.
Heights average 39-52 inches. A harsh squawk characterizes
its call.
More info:
http://www.ecoinfo.ec.gc.ca/env_ind/region/herons/heron_e.cfm