California
Redhead
Aythya americana
(L 19" WS 20" Wt 2.3 lb)
Fiesta Island
Mission Bay
San Diego
03Jan2018
Exceptionally gregarious...common
nest parasites to other ducks, even
Northern Harriers.
 female
© Audubon
Society
© Wikipedia
Aythya in Greek is a seabird
mentioned by Aristotle,
Hesychius et al.