[Tweeters] WA County Year List Project updated through October 2025 [WA Birder]

[David Swinford via Tweeters]

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:


> 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 at u.washington.edu> 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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