Date: 8/10/17 5:18 pm
From: Oscar Harper <oeharper3...>
Subject: [obol] Re: Corvallis CHIMNEY SWIFT--8/6/2016
I think Isaac meant 2017 :) or is he living in the past?

On Thu, Aug 10, 2017 at 9:54 AM, Isaac Denzer <bartailedgodwit...>
wrote:

> Hi all,
>
> I found a Chimney Swift in Corvallis (to the west of the Reser Stadium) on
> Sunday, Aug 6th. My description along with other details can be found at
> the bottom of this email. The swift was found in a residential area with a
> mid sized group of VASWs (about 140-150). I do not feel comfortable
> disclosing the exact location of this bird as I'm not sure the locals would
> appreciate having loads of birders outside their houses all the time. Also
> I did not fell comfortable sharing this information right away for similar
> reasons as mention above. However, it would be well worth checking larger
> swift roosts in the area as it may have moved to one.
>
> If this record is accepted by the OBRC it will be Oregon'f fourth record
> and a first for Benton County.
>
> Happy swift hunting,
>
>
> Isaac Denzer
>
>
> I saw what I am positive was a Chimney Swift in Corvallis on the evening
> of 8/6/17 at about 8:20 PM. I saw and heard it at close range with a flock
> of about 140 Vaux's Swifts while my mom was stopping by a friends house. I
> want to keep this very quite as it is a residential neighborhood, and the
> people living in the area may not feel comfortable having a pack of people
> running around outside their yards with cameras and binoculars, so this
> checklist will be hidden until I believe the bird to be gone.
>
> First seen at 8:21 PM while watching a flock of about 140 Vaux's Swifts
> and last seen at about 8:30. I did not have any optics or other birding
> gear on me at the time, but the Chimney Swift (along with about 40 Vaux's)
> was flying quite close to me and I got some very good views. I feel 100%
> confident of the ID.
>
> My over all impression was of a larger swift (in comparison to the nearby
> Vaux's), it appeared have a comparatively longer tail and somewhat narrower
> wings and a noticeably darker rump and throat. After first seeing this bird
> I got quite excited and started listening for Chimney Swift calls. After a
> couple minutes I heard it call, I heard it one more time after that and saw
> it twice more. The call did not sound like any VASW I have ever heard. The
> best description of the call I can find is in the Sibley Guide to the birds
> of North America. Sibley describes it as "single high, hard chips run
> together into a rapid, uneven, twittering, chattering series". VASW calls
> should have a higher tone than the bird I heard and the chips should be
> followed by a buzzy trill. I have heard and seen Chimney Swifts on the east
> coast, and this bird seemed to be a very good fit. As mentioned above
> Vaux's should be about 10% smaller, have comparatively shorter, narrower
> wings and a shorter tail and have a considerably paler throat and rump.
> Also the Chimney seemed to have some bulging on the edges of the primaries,
> whereas the Vaux's appeared to have pretty straight edges to the primaries.
>
> Ruling out of other somewhat similar species: Similar tropical species
> ruled out by voice, plumage and certain structural differences. The only
> tropical swift lookalike to Chimney Swift is the Chapman's Swift and its
> call is quite different from those of a Chimney. Also any tropical swift in
> Oregon would be VERY unlikely. Black Swift should be much bigger and darker
> overall, with broader tail and longer wings, also they should have a
> different flight style and calls. White-throated Swift should be larger and
> have a white throat, white patches on sides of rump and white tips to
> secondaries, also a longer tail, different flight style and different
> calls. Purple Martin would be much bigger, bulkier and darker (if a male)
> or have a pale belly (if a female) and a notched tail, along with a very
> different flight style and calls. Other swallows have different flight
> style, calls and pale bellies along with other field marks of which I can
> go into more detail in if needed. Also many of the species above would
> probably not be found flocking with Vaux's Swift.
>
> Unfortunately I did not have any birding equipment on me, not even my
> phone to record the calls with. This report is written from memory (as I
> couldn't find any paper either...).
>
>
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