Date: 5/15/25 2:59 pm From: Steve Hampton via Tweeters <tweeters...> Subject: Re: [Tweeters] more or fewer birds
eBirds trends maps are amazing and have all this, sometimes in the breeding
season, sometimes for winter or year-round. Go to the Science tab and click
on the left option: Status and Trends.
https://science.ebird.org/en/status-and-trends
Enter a species and it will show you the Abundance map first.
Click on the Trends oval above the map for the Trends map.
You'll see the map has red and blue dots, for decreasing or increasing
trend (2012-2022 usually, as it's only eBird). Darker color means more
change. Larger dot means a bigger base population. Each dot is 27km x 27km,
about the size of a CBC circle. You can zoom in and hover over them for the
detailed data.
They are amazing maps and correlate to ground surveys reasonably well in
the instances I've checked.
On Thu, May 15, 2025 at 1:11 PM David B. Williams via Tweeters <
<tweeters...> wrote:
> Greetings all.
>
> I was wondering if there are any reports showing which bird species are
> more abundant and less abundant in Seattle over the past 50 years or so.
>
> One thought I had would be to look at CBC data and I have a note into the
> Birds Connect Seattle to try and access that.
>
> Any help would be appreciated.
>
> Sincerely,
> David
> ~~~~~~~~~~~~~~~
> *David B. Williams*
> www.geologywriter.com
> *Free newsletter: *https://streetsmartnaturalist.substack.com/ > I live and work on the land of the Coast Salish peoples and am trying to
> honor with gratitude the land and those who have inhabited it since time
> immemorial. I know that I have much more to learn and hope to continue that
> journey.
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