Maybe hours spent looking vs. no. of birders.
On Tue, Nov 18, 2025 at 7:04 AM Dennis Paulson via Tweeters <
tweeters at u.washington.edu> wrote:
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Matt, thanks as always for your thorough analyses.
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I wonder if a significant part of the analysis is missing, though-;the
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number of birders who report those bird species.
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I don't know any other way to do it relatively simply than to get a figure
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for the number of people who sent in eBird lists each year (for each
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county, even better) in recent decades. How about graphing that vs. number
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of species?
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Can we look at it thinking that as the number of birders go up, we should
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be seeing more species? Apparently not, but then what does that mean?
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It would also be interesting to analyze the species themselves. Which
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species have been reported in every single year for which you have been
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keeping records? Which species are missing in just a couple of those years,
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and any ideas why? How about volunteers to take on some of these analyses
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on winter days too rainy to go out birding?
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Dennis Paulson
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Seattle
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On Nov 18, 2025, at 6:00 AM, Matt Bartels via Tweeters <
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tweeters at u.washington.edu> wrote:
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Hi Tweeters & InlandNW Birder
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An updated version of the 2025 County Yearlist Project is up and available
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at Washington Birder.
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http://wabirder.com/county_yearlist.html
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Thanks compilers for all your work, and thanks everyone who has
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contributed.
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This update, coming at the end of October and as Fall Migration has pretty
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much wrapped up, is a relatively stable point to check in - only a few late
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migrants and then winter birds left for the year lists.
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Here's how things look compared with recent years:
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*We've tallied 390 species statewide as of the end of October in 202*5.
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That's one higher (essentially the same) as we had at this point last year
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and the year before.
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*For Western WA, our 361 total *is 1 lower than last year, and 4 lower
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than 2023.
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*For Eastern WA, our 319 total* is 4 lower than last year, and 5 lower
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than 2023.
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Overall, we're looking pretty similar to last year.
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Looking at the percentage of each county's total list seen, 33 counties
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have seen between 60% and 75% of their county's total list - a pretty
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consistent result saying about 2/3 of the birds on any county's have been
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found The biggest outlier: Okanogan County, which has seen 81.6% of its
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list total already this year.
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*34 counties *have totals within 10 of their 2024 totals.
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*18 counties* have higher totals than this time last year, while 17 have
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lower totals than at this point last year.
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Four counties have exactly the same total as at this point last year
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[Asotin, Pierce, San Juan and Walla Walla].
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*91 species have been seen in all 39 counties*, and 168 species have been
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found in 30 or more counties.
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*If you'd like to take a look at where things stand, the list and many
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other interesting files are at the Washington Birder
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website: http://www.wabirder.com/
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<https://urldefense.com/v3/__http://www.wabirder.com/__;!!JYXjzlvb!zG34Bg6bHN7DFbBBUaTDwShMg1FqqyJYn5MFZzMWbfTt3uAOqMTkSTJu0EzT-2kdesFyODa5qw$> A
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direct link to the 2025 county yearlist & the list of county compilers
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contact info:http://www.wabirder.com/county_yearlist.html
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<https://urldefense.com/v3/__http://www.wabirder.com/county_yearlist.html__;!!JYXjzlvb!zG34Bg6bHN7DFbBBUaTDwShMg1FqqyJYn5MFZzMWbfTt3uAOqMTkSTJu0EzT-2kdesFgZPFJVA$>Thanks
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to all the compilers and all those pitching in to sketch a picture of
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another year's birds in WA. Good birding,Matt Bartels[mattxyz at earthlink
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dot net]Seattle, Wa*
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