Date: 8/31/20 10:06 am
From: mary holbert <holbertmary...>
Subject: [obol] Re: Vultures along Hwy 34
Thanks you two for the information. I'm a big vulture fan, glad to hear
it's dinner time with no additives

mary

On Mon, Aug 31, 2020 at 9:34 AM Thomas Gilg <tom...> wrote:

>
>
> On my very recent Brownsville <-> Corvallis drives, the farmers were
> plowing/planting and kicking up epic dust storms, and ever since the
> seed/hay harvest awhile back, many small groups of vultures have been in
> the fields. At my home just outside of Brownsville, the vole population is
> way up this year, and very recently I’ve had several large groups of
> vultures fly over.
>
>
>
> I don’t suspect anything sinister going on. Last year I met one of the
> farmers near the Tangent Eagle Roost, and was impressed by his knowledge of
> the bird populations over the decades, and his efforts to rebuild habitat
> that had been cut down and plowed under in prior decades.
>
>
>
> --tg
>
>
>
> *From:* <obol-bounce...> <obol-bounce...> *On Behalf
> Of *larspernorgren
> *Sent:* Sunday, August 30, 2020 12:02 PM
> *To:* <holbertmary...>; <obol-request...>
> *Cc:* Oregon Birders OnLine <obol...>
> *Subject:* [obol] Re: Vultures along Hwy 34
>
>
>
> I noticed this at around 9:30-10am Saturday. Not sure l've seen so many
> Turkey Vultures in a field before. Concentrated on a carcass or dispersed.
> It's a perennial grass seed field, where vole populations can build up and
> attract concentrations of raptors. The ag field at Luckiamute Landing state
> natural area has been blessed with the voles this year, but so far only
> Great Blue Herons are pursuing them.
>
> I too remarked on the absence of straw, hence evidence of recent
> machinery and attendant microtine mortality in the field between Corvallis
> and Tangent. Perhaps the vultures are attracted to voles that have been
> dead for awhile. The field at Luckiamute Landing state natural area has had
> dead voles of a certain vintage this season, occasionally revealed by bird
> banders' companion canines. I know that slug bait is sometimes applied to
> farm fields in Linn County, but have never heard of rodenticides. Not
> saying it wouldn't happen, but the profitability of the crop is so marginal
> that no one would spend an extra penny.
>
> On occasion the vole densities are such that Buteos cease to fly,
> or even run, but waddle from vole to vole. I didn't pull over and watch.
> But l didn't see the Turkey Vultures moving at all. On a related note, l
> was at the Marine Science center trail before sunrise Saturday and saw at
> least half a dozen Turkey Vultures rise up behind Idaho Point and start
> flying about quite actively. 6am at the latest and still kinda dark. I
> always think of this species as taking to the skies around 10am. That's
> when thermal updrafts start to develope in the Willamette Valley. The north
> wind was plenty strong over Yaquina Bay yesterday to make a vulture's time
> aloft entertaining and effort free.
>
>
>
>
>
>
>
>
>
> Sent from my Verizon, Samsung Galaxy smartphone
>
>
>
> -------- Original message --------
>
> From: mary holbert <holbertmary...>
>
> Date: 8/30/20 11:36 AM (GMT-08:00)
>
> To: <obol-request...>
>
> Cc: Oregon Birders OnLine <obol...>
>
> Subject: [obol] Vultures along Hwy 34
>
>
>
> I'm enroute Corvallis to I-5. I noticed along the South side of the
> highway in fields that have been completely harvested there are lots of
> vultures on the ground. They are not congregated. They appear to be
> eating. This is not a recent harvest there's not any stubble the field
> looks like it's starting to refresh itself. My concern is that somebody is
> poisoning rodents and the vultures are feeding on them. Any thoughts?
>
>
>
> Mary Holbert
>

 
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