I agree with Jon. I've noticed a number of filter differences between
counties that seem to be due to different approaches to setting the filters
by the respective county expert rather than differences in bird
distribution. E.g., IIRC, juncos were being flagged at the end of April in
Howard but not Montgomery. One thing I'd like to see in an ideal world
would be some attempt at making filters uniform when there's really no
distribution differences between the counties. But I can imagine that
would be a time consuming and politically dicey endeavor!
Good Birding!
Jim Moore
Rockville, MD
On Mon, May 6, 2013 at 2:26 PM, Jon Corcoran <nvjxc11...> wrote:
> Hi Tim,
>
> The eBird filters go by county, so in Baltimore they are still on the
> "common" list but in Hartford they have been deemed "late" at this point I
> suppose. These filters are set on an individual county basis, and often by
> different volunteers I believe, which may be why in some cases there is
> some variation between neighboring counties (aside from factors like
> eco-region or hotspots for specific species..)
>
> Jon Corcoran
> Catonsville, MD
>
> ------------------------------
> *From:* Timothy Houghton <thoughton...>
> *To:* "<mdbirding...>" <mdbirding...>
> *Sent:* Monday, May 6, 2013 1:55 PM
> *Subject:* [MDBirding] EBird filter and Yellow Palm Warbler
>
> Maybe one of the reviewers can respond to this. I found a bright Yellow
> Palm Warbler at Susquehanna on May 3--listed as "rare" on eBird for this
> location. So I had to give an explanation, etc., etc. Today I submitted
> checklists to eBird for two different locations locations near Loch Raven
> Res.--in these two cases, I noticed that Yellow Palm was on the regular
> list (not "rare"). Can someone tell me why? I'm curious to know, especially
> since Susquehanna is such a good migration spot in general. Thanks.
>
> Tim Houghton
> (Glen Arm)
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