Our backyard is a South Florida canal. Two birds approx. 8" tall, long bright green legs, big heron-like feet, shortish beaks,feathers shades of brown with no distinctive markings or patches we could see. We routinely see little greens, great blues, tricolors, yellow-crested. These looked unlike any we've seen before. They were hanging around the cross-bred ducks (another question, another time)