Least grebe , a photo by ricmcarthur on Flickr. He's small but has attitude, at least when he's wet. About 8-10 inches long and weighs around 5.5 oz. Dives and disappears then pops up a good distance away Cornell Lab of Ornithology says- The smallest grebe in the Americas, the Least Grebe inhabits both temporary and permanent wetlands from south Texas to Argentina. Easily overlooked because of its size, coloration, and habits, it remains the most poorly understood of North American grebes. www.birds.cornell.edu/