Moult chronology of American Wigeon
, Anas americana, in relation to reproduction.
Mean canonical scores of successful nests differed from unsuccessful nests for all species but American Wigeon
(Table 3, bottom parts of Figs.
Mallard - - Northern Pintail - - American Wigeon
- - Common Eider + - King Eider + + Oldsquaw + B
In a related event, on December 6, 2014, an American wigeon
was captured and partially consumed by a captive-reared gyrfalcon (Falco rusticolus) in Whatcom County, [approximately equal to] 8 km from Wiser Lake.
Sadly not an American wigeon
but a rather similar Chiloe wigeon an escapee from a wildfowl collection
Next stop was to look for American Wigeon
and Green Winged Teal at Cresswell Quay,but again no sign.
As for the Eurasian/American (EW/ AW) wigeon hybrids, professor Rohwer explains it thusly: "Eurasians come down the (Pacific) coast in small numbers, and don't find many American wigeon
to mate with.
Population estimates for American black ducks, ring-necked ducks, American wigeon
, bufflehead, goldeneyes and mergansers surveyed in eastern North America were similar to last year and their 1990-2007 averages.
On the Dee Estuary a drake American Wigeon
was on the salt marsh at Flint Castle,always a great place for some winter birdwatching.
A drake American wigeon
was found on the border pool joining the drake green winged teal and smew already in residence.
numbers were up 23 percent from 2012, and similar to the long-term average of 2.
An osprey was also seen again on the Glaslyn Estuary near Porthmadog where the female American wigeon
remained with its commoner cousins, but never easy to pick out.
Porthmadog area has enjoyed outstanding birdwatching with an American wigeon
on the Glaslyn marshes, view from the sluice gates, also two black-necked grebes and four Slavonia grebes off Borth Y Gest.
An American wigeon
duck was found by Susan Morris on the River Clwyd between Rhyl and Rhuddlan.
Green-winged teal and American wigeon
numbers similar to 2011.