I'm quite sure that there are two birds. I like Ted's photo as an intergrade as the wing stripe is fairly strong, more so than on an American. I have been able to see the Common (Eurasian) Teal from both sides and it has no hint of a side spur and the wing stripe is quite prominent. Other features of this bird I've noted are the more defined thin facial stripes and a blue/purple cast to the iridescent eye-stripe vs blue/green of nearby American. Keep in mind that on a Eurasian the scaps or gray flank feathers can partially obscure the white wing stripe, making it appear reduced at a distance.
Zach Millen Akron
On Mon, Mar 13, 2017 at 9:27 PM, Ted Nichols II <tanicholsii...> wrote:
> Mike, > > Interesting you point this out, as I was just at Middle Creek and noticed > the same thing. (I actually have been questioning things from the > beginning, but now believe there may be two birds around?) > > I just posted the following to the ID that PA Bird! Facebook group ( > https://www.facebook.com/groups/pabirdID/) > along with a picture for all to see: > > "This pond at Middle Creek WMA is the one where a Eurasian Green-winged > Teal continues to be reported including multiple times today... I thought > some things looked off when the bird was first reported over a month ago as > a pure Eurasian Teal and I saw it because I didn't think the horizontal > stripe was quite bold enough, but I went back the next day and I was more > convinced it was a pure Eurasian... Well, today I photographed what again > looks to be an Intergrade Green-winged Teal? What are your thoughts? Could > the bird have been an intergrade to begin with and is molting to show the > features more prominently? This is the only bird I saw on this pond today > with a horizontal stripe, but it clearly shows a vertical stripe as well... > There's always the 2 bird theory as well..." > > Regards, > Ted Nichols II > Annville, Pa. (Lebanon County) > > On Mon, Mar 13, 2017 at 20:00 Michael Fialkovich <mpfial...> > wrote: > > > I found the teal but what I saw was a bird that showed both the > horizontal > > white line just under the wings AND the vertical white lines on either > side > > of the breast, so what I saw was a hybrid between the two. The vertical > > white lines on this bird were less bold, shorter and narrower than those > on > > the American Green-winged Teal but were noticeable through a scope. I > saw > > the bird both in and out of the water (it was preening on shore at one > > point). > > > > Mike Fialkovich > > Pittsburgh Area, Allegheny County > > >