Aythya collaris. Ring-necked Duck. 
Downy Stage: — Underparts very pale yellow; forehead and sides of 
head and neck the same, washed with dark fulvous yellow; the same 
yellow is on underside of wing and, alternating with brown, covers the 
side of body. The crown, line down back of neck, wings, and line down 
tibia to tarsus, whole of centre of back, and spaces between the yellow 
patches, a rich brown. Auk, 4, Jan. , 1887. P. 2*/. 
