Jim,
Here's the number of roosting Vaux's the last 4 nights at the four closest major roosts north of Woodland.
Selleck JBLM Chehalis Rainier, OR
9/17 238 8761 1413 2900
9/18 2337 7192 3206 2805
9/19 2373 4691 718 6680
9/20 2747 8034 469 5491
I would suspect a lot of the swifts you saw came out of our new site in Rainier.
Larry Schwitters
Issaquah
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On Sep 21, 2019, at 3:45 PM, Jim Danzenbaker <jdanzenbaker at gmail.com> wrote:
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Hi Tweeters,
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It was time to check for Turkey Vulture migration at the north end of Woodland Bottoms, Cowlitz County so I parked myself there with the following 4 hour results:
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Turkey Vulture: 253 (largest kettle was 44)
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Peregrine: 3
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Northern Harrier: 7
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Red-tailed Hawk: 6-15 (who knows how many were really there as many would get up, fly around, and descend again)
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Osprey: 3
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Cooper's Hawk: 1
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Bald Eagle: 3
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I was blown away by the number of migrating Vaux's Swifts at this location. I conservatively estimated and ebirded a total of 1,352 but I figure that for every swift I saw, 3 or 4 more got by without being counted (you have to look away from the swifts to look at the vultures!). That would bring the total to around 4000-5200. There were probably about 20 birds cruising by every minute. 20 x 240 minutes is 4800. Every time I scoped a raptor, there would be at least 20 swifts flying through the field of view.
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Larry Schwitters - any decrease in the number of roosting swifts in your area over the last several days?
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Keep your eyes and ears skyward.
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Jim
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--
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Jim Danzenbaker
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Battle Ground, WA
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360-702-9395
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jdanzenbaker at gmail.com <mailto:jdanzenbaker at gmail.com>_______________________________________________
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