Fulvous Whistling-Duck (dendrocygna bicolor)

Red Mountain Park, Mesa
Photo by Pierre Deviche

Red Mountain Park, Mesa
Photo by Pierre Deviche

Chaparral Park, Scottsdale
Photo by Michael Moore

Chaparral Park, Scottsdale
Photo by Rich Ditch

There has been some discussion on the AZ/NM listserv regarding plumage and bill size differences between the Red Mountain Fulvous Whistling-Duck and the Scottsdale bird. Presented here is comparison shots.