Eurasian Green-winged Teal (Anas crecca crecca), Tempe Lake, Maricopa County
This Eurasian Green-winged Teal was found by Myron Scott on 9 January 2008 at the east end of Tempe Town Lake. It was photographed by Pierre Deviche on 10 January 2009
Currently the ABA and AOU checklist committees consider Eurasion Green-winged
Teal and American Green-winged Teal to be subspecies. However, other
authorities consider them to be full species. See the
links above for more details.
This bird has the bold horizontal
white scapular stripe that is the signature field mark of this form. It is
is clearly visible when the bird is flapping. The white vertical bar of
the American Green-winged Teal is absent on both sides. Hybrids between
the two forms usually have faint vertical stripes. This bird also has a
stronger pale bar in front of the black bar on the vent than is typical for
American. Two other features that
were apparent on the Gilbert bird, however are not as apparent on this one.
Eurasian Green-winged Teal usually has bolder white facial stripes, which were
especially prominent on last year's Gilbert bird. This bird does not seen
to have that feature, but it is unknown how much variation there is in this. Web pictures of Common Teal in Europe show birds that look virtually identical to this
one. Also, the Gilbert bird has noticeably courser vermiculations on the
side. Higher resolution pictures would be required to determine if this
bird has that feature.
10 January 2009, photo by Pierre DevicheAll photos are copyrighted© by photographer
Submitted on 10 January 2009