That would in fact be quite an unusual sighting. According to eBird, there has been only a single Blue-winged Teal observed in the entire Puget Sound area between December and March: at the end of March last year in Mill Creek. At Magnuson Park, again on eBird, there have been only a dozen reports in the last 6 years and all of them in May or early June.
> On Feb 27, 2017, at 3:28 PM, Wayne Palsson <wpalsson...> wrote:
> I have been birding Magnuson Park a couple of times per week for the past 4 years. Blue-wings are rather uncommon--I've seen one and another birder I know has seen one. The park checklist (now many years old) has them at one or two records, so sounds like you were pretty lucky!
> There was a Say's Phoebe in the park last Friday (2/24), the second one I've seen in the park.
> Message: 9
> Date: Mon, 27 Feb 2017 09:10:00 -0800
> From: Margaret Sandelin <msand47...> <mailto:<msand47...>> > Subject: [Tweeters] Magnuson park
> To: <tweeters...> <mailto:<tweeters...> > Message-ID: <58B45D68.7080900...> <mailto:<58B45D68.7080900...>> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> As a tyro birder I went to Magnuson park last Wednesday to look for the
> Cedar Waxwings as I have not seen them before, but it turned out to
> cloud over with a cold wind off the lake and I did not dress warmly
> enough and did not have a hat. I parked at the south end by the boat
> ramp. Only a couple crows inland but several birds on the water -
> without my book could ID mallards of course and a male Bufflehead. But
> saw a distinctively marked fowl I did not know with a white crescent
> behind the bill and in front of its eyes making me pull my book out of
> my backpack and IDed a male Blue-winged Teal. Don't know if he was an
> unusual or common visitor but thought I would mention it. Walking back
> to my car saw one of the crows on the ground working on a rat carcass.
> Margaret Sandelin
> Tweeters mailing list