ClipArt ETC
"Chauna Cristata, Northern Screamer, is dark grey, with a black ring around the neck and whitish-grey cheeks and throat. This is the largest form, and is bigger than turkey; it ranges from South Brazil to Argentina." A. H. Evans, 1900

Northern Screamer

"Chauna Cristata, Northern Screamer, is dark grey, with a black ring around the neck and whitish-grey…