[Tweeters] Eurasian Tree Sparrow Origin

Matt Bartels mattxyz at earthlink.net
Tue Oct 29 05:12:05 PDT 2019

Or , for that matter, whether it is more likely it was purchased by a bird fancier and escaped — here’s a Vancouver WA site with them for sale for $56.99 - https://thefinchfarm.com/eurasian-tree-sparrow/ <https://thefinchfarm.com/eurasian-tree-sparrow/> Makes a great gift for the holidays!

Matt Bartels
Seattle, WA

> On Oct 29, 2019, at 5:09 AM, Matt Bartels <mattxyz at earthlink.net> wrote:


> Hi hi -

> I’ll chime in on this one :

> The WBRC follows the ABA in its determination of ‘countable’ birds — So, yes, by ABA rules, ’ship assisted’ alone doesn’t make a bird uncountable.

> Here’s the section from the ABA listing rules [http://listing.aba.org/aba-recording-rules/ <http://listing.aba.org/aba-recording-rules/> ]


> Rule 3 part a:

> (i) An otherwise wild bird that voluntarily uses or is attracted to a feeder, nest box, audio playback, ship at sea, or other nonnatural device, without being captured, is still considered wild. Physical contact between an observer and a bird does not automatically preclude a bird from being counted, as there are situations where wild birds have learned to eat from outstretched hands or have used people as temporary perches.


> However, the question is whether it is more likely that a bird alighted on a ship and stayed there unassisted for a journey — for example, the Brown Booby that rode into Edmonds on a sailboat was free to go at any time, so it was countable.But when a House Swift was found dead in BC in 2017, it was ultimately judged more likely that it had been trapped in a container for the cross-Pacific journey than that it had freely crossed on its own.


> With Eurasian Tree Sparrow, I imagine it will be worth a discussion of whether a bird like that [a] is more likely to have wandered west from its core range in MO or [b] if it came from Asia if it was more likely to have freely sat on a ship for the journey or perhaps been stuck inside a container, like House Sparrows in a big WalMart.


> It will be worth a discussion, for sure!


> Matt Bartels

> Secretary, WBRC

> Seattle, WA



>> Begin forwarded message:


>> From: John Puschock <g_g_allin at hotmail.com <mailto:g_g_allin at hotmail.com>>

>> Subject: Re: [Tweeters] Eurasian Tree Sparrow Origin

>> Date: October 28, 2019 at 8:47:25 PM PDT

>> To: Tweeters Tweeters <tweeters at u.washington.edu <mailto:tweeters at u.washington.edu>>


>> Does the WBRC have an explicit "no ship-assistance" rule or policy? By ABA listing standards, ship-assisted birds are countable (or at least the last time I checked that was true).


>> John Puschock

>> Seattle

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