I found the article in Proceedings of the National Academy of Sciences of
the United States of America, Vol. 119, Issue 26 (2022): article 2204172119.
This is in the (second?) Psychological and Cognitive Sciences section of
that issue.

Re Steven Wood question about sample size of the study:

Sample size: 66 experts (73% female) and 57 controls (75% female). All were
in the Toronto area. The experts, i.e., could identify more than 20 species
found in the local habitat and had bird knowledge beyond common backyard
species, had mean age 48.1 and a mean of 18.1 yrs education. The control
persons were outdoor enthusiasts (gardeners, fishers, hikers, etc.) who had
no local bird knowledge beyond common backyard species, and they had 47.9
yrs mean age and 17.6 yrs mean education.

-----Original Message-----
From: Tweeters On Behalf Of tweeters-request at mailman11.u.washington.edu
Sent: Wednesday, July 13, 2022 12:05 PM
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Subject: Tweeters Digest, Vol 215, Issue 13

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Today's Topics:

1. Re: Pacific-slope Flycatcher in Garden (Stan Bezimienny)
2. Study examines memory in expert birdwatchers (Wood, Steven)
3. Barry - Merlins v Hummers (Michelle Landis)
4. Austin Texas Trip (Gary Cummins)
5. Re: Study examines memory in expert birdwatchers
(Larry Schwitters)
6. Re: Austin Texas Trip (Philip Dickinson)
7. Re: Austin Texas Trip (LMarkoff)
8. Re: Barry - Merlins v Hummers (Robert O'Brien)
9. bird magazines, anyone? Bueller? (Gary Bletsch)
10. non-turkey vulture report for June (Diann MacRae)


----------------------------------------------------------------------

Message: 1
Date: Tue, 12 Jul 2022 14:26:19 -0700
From: Stan Bezimienny <grzebiuszkaziemna at gmail.com>
To: tweeters at u.washington.edu
Subject: Re: [Tweeters] Pacific-slope Flycatcher in Garden
Message-ID: <A674012D-EA85-4C04-8635-C2F0FC7707B5 at gmail.com>
Content-Type: text/plain; charset=us-ascii

I had Pacific-slope Flycatcher nesting *on* my house (literally, on the bend
of a downspout, 6 ft off the ground) - in Lake Forest Park twice. I was able
to extensively photograph parents and later juveniles from both outside and
inside of the house. And, I hear them every year in season from tall
conifers around the house.

Best,

Stan in LFP


> On Jul 12, 2022, at 12:08, tweeters-request at mailman11.u.washington.edu

wrote:

>

> Pacific-slope Flycatcher in Garden



------------------------------

Message: 2
Date: Tue, 12 Jul 2022 21:44:01 +0000
From: "Wood, Steven" <woodsteven at seattleu.edu>
To: "tweeters at u.washington.edu" <tweeters at u.washington.edu>
Subject: [Tweeters] Study examines memory in expert birdwatchers
Message-ID:

<SJ0PR04MB7501A36768075643C584273BA7869 at SJ0PR04MB7501.namprd04.prod.outlook.
com>

Content-Type: text/plain; charset="us-ascii"




"The memory test centered on bird pictures.



Wonder how large a sample they had?



Who can find the published study? I haven?t looked very hard but have
looked."


The study is linked at the bottom of the ScienceDaily article, but a direct
link is here:

The structure of prior knowledge enhances memory in experts by reducing
interference | PNAS<https://www.pnas.org/doi/full/10.1073/pnas.2204172119>