[Tweeters] The invasion of the Pacific Northwest: California’s birds expand north with warmer winters

Steve Hampton stevechampton at gmail.com
Mon Mar 9 17:56:49 PDT 2020


And the link: :)

https://thecottonwoodpost.net/2020/03/09/the-invasion-of-the-pacific-northwest-californias-birds-expand-north-with-warmer-winters/



Sent from my iPhone


> On Mar 9, 2020, at 6:36 PM, Steve Hampton <stevechampton at gmail.com> wrote:

>

> 

> Hello all,

>

> Here's a blog post I put together. I'm interested in any thoughts or feedback.

>

> I use Christmas Bird Count data to illustrate that some of California’s most common resident birds (historically) have expanded their ranges hundreds of miles north into Oregon, Washington, and British Columbia in recent years. The increases are dramatic, highly correlated with each other across a wide range of species, and coincide with rapid climate change.

>

>

> --

> Steve Hampton

> Davis, CA

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