Date: 6/19/20 9:09 am
From: Robert O'Brien <baro...>
Subject: [obol] Re: White-rumped vs. Semipalmated Sandpiper?
Now maybe since we mostly see juvenile Semi Sands in fall in Oregon,
perhaps juvenile Semi Sands have blunt bills
that later get pointed as they mature? Or is this going off the deep end?
Bob OBrien


On Fri, Jun 19, 2020 at 9:00 AM Robert O'Brien <baro...> wrote:

> Well, I dunno. That is a often-mentioned mark for White-rumped, but I
> think this guy fits into that slot OK
> Here is an overlay with a White-rumped from Macaulay library, sizing more
> or less the same and lining up the eyes.
> Has anyone ever seen a Semi Sand with a sharp bill like this in Oregon?
> Any photos?
> Bob OBrien
>
> On Fri, Jun 19, 2020 at 8:48 AM Bob Archer <rabican1...> wrote:
>
>> Hi:
>>
>> Structure is wrong for a White-rumped, they have long primaries well past
>> tertials and the tail.
>>
>> Bob Archer
>>
>> On Fri, Jun 19, 2020 at 8:39 AM Robert O'Brien <baro...> wrote:
>>
>>> While looking for something else I accidentally came across this photo,
>>> taken this month in British Columbia
>>> https://ebird.org/checklist/S70446153
>>> Identified as a Semipalmated, I'd suggest a White-rumped, based upon the
>>> narrow, sharply-pointed bill.
>>> But, seems like I recall some discussion some time suggesting that
>>> eastern Semipalmated have more pointed bills than the ones we get here on
>>> the West Coast, which can usually be IDed from Western just by their blunt
>>> bills.
>>> No discussion of the ID in the eBird report and an easy mistake to make,
>>> unless you looked for the rump in takeoff/flight. And since White-rumped
>>> would not be expected, who knows?
>>> What do people think?
>>> Bob OBrien Carver OR
>>>
>>>
>>>

 
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