Date: 11/18/25 8:54 am From: David Swinford via Tweeters <tweeters...> Subject: Re: [Tweeters] WA County Year List Project updated through October 2025 [WA Birder]
Maybe hours spent looking vs. no. of birders.
On Tue, Nov 18, 2025 at 7:04 AM Dennis Paulson via Tweeters <
<tweeters...> wrote:
> Matt, thanks as always for your thorough analyses.
>
> I wonder if a significant part of the analysis is missing, though—the
> number of birders who report those bird species.
>
> I don’t know any other way to do it relatively simply than to get a figure
> for the number of people who sent in eBird lists each year (for each
> county, even better) in recent decades. How about graphing that vs. number
> of species?
>
> Can we look at it thinking that as the number of birders go up, we should
> be seeing more species? Apparently not, but then what does that mean?
>
> It would also be interesting to analyze the species themselves. Which
> species have been reported in every single year for which you have been
> keeping records? Which species are missing in just a couple of those years,
> and any ideas why? How about volunteers to take on some of these analyses
> on winter days too rainy to go out birding?
>
> Dennis Paulson
> Seattle
>
> On Nov 18, 2025, at 6:00 AM, Matt Bartels via Tweeters <
> <tweeters...> wrote:
>
> Hi Tweeters & InlandNW Birder
>
> An updated version of the 2025 County Yearlist Project is up and available
> at Washington Birder.
> http://wabirder.com/county_yearlist.html >
> Thanks compilers for all your work, and thanks everyone who has
> contributed.
>
> This update, coming at the end of October and as Fall Migration has pretty
> much wrapped up, is a relatively stable point to check in - only a few late
> migrants and then winter birds left for the year lists.
>
> Here’s how things look compared with recent years:
>
> *We’ve tallied 390 species statewide as of the end of October in 202*5.
> That’s one higher (essentially the same) as we had at this point last year
> and the year before.
>
> *For Western WA, our 361 total *is 1 lower than last year, and 4 lower
> than 2023.
>
> *For Eastern WA, our 319 total* is 4 lower than last year, and 5 lower
> than 2023.
>
> Overall, we’re looking pretty similar to last year.
>
> Looking at the percentage of each county’s total list seen, 33 counties
> have seen between 60% and 75% of their county’s total list - a pretty
> consistent result saying about 2/3 of the birds on any county’s have been
> found The biggest outlier: Okanogan County, which has seen 81.6% of its
> list total already this year.
>
>
> *34 counties *have totals within 10 of their 2024 totals.
> *18 counties* have higher totals than this time last year, while 17 have
> lower totals than at this point last year.
> Four counties have exactly the same total as at this point last year
> [Asotin, Pierce, San Juan and Walla Walla].
>
> *91 species have been seen in all 39 counties*, and 168 species have been
> found in 30 or more counties.
>
>
>
>
>
>
>
>
>
> *If you'd like to take a look at where things stand, the list and many
> other interesting files are at the Washington Birder
> website: http://www.wabirder.com/ > <https://urldefense.com/v3/__http://www.wabirder.com/__;!!JYXjzlvb!zG34Bg6bHN7DFbBBUaTDwShMg1FqqyJYn5MFZzMWbfTt3uAOqMTkSTJu0EzT-2kdesFyODa5qw$> A
> direct link to the 2025 county yearlist & the list of county compilers
> contact info:http://www.wabirder.com/county_yearlist.html
> <https://urldefense.com/v3/__http://www.wabirder.com/county_yearlist.html__;!!JYXjzlvb!zG34Bg6bHN7DFbBBUaTDwShMg1FqqyJYn5MFZzMWbfTt3uAOqMTkSTJu0EzT-2kdesFgZPFJVA$>Thanks > to all the compilers and all those pitching in to sketch a picture of
> another year's birds in WA. Good birding,Matt Bartels[mattxyz at earthlink
> dot net]Seattle, Wa*
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