Green-winged Teal is a common and
widespread duck in North America which breeds in the
northernmost areas and is their smallest dabbling duck. It is
the New World counterpart of Common Teal with which it is
sometimes considered conspecific. This dabbling duck is strongly
migratory and winters far south of its breeding range. It is
highly gregarious outside of the breeding season and will form
large flocks. In flight, the fast, twisting flocks resemble
waders.
There have been two Green-winged Teal
reported from S. Gloucestershire, they are;
2010: (1)
A male was seen on January 27th on Lagoon
I at Oldbury Power Station before being flushed onto the tidal
reservoir. It later returned to Lagoon I at high tide. (Darryl
Spittle)

Drake
Green-winged Teal at Oldbury Power Station in January 2010. Darryl
Spittle.
2001: (1)
A male in winter plumage was identified on
January 4th at Oldbury Power Station. It was present for
nineteen days and was last noted on January 22nd. This
occurrence constitutes the first report of this species for S.
Gloucestershire. (M Warren)