Date: 6/29/20 6:39 pm
From: Zacheriah Cota-Weaver <zac...>
Subject: Re: [VTBIRD] Rare Bird Reports

All of the local eBird reviewers set their own filters based on county
levels. These filters allow reviewers to catch eBird observations that have
potential for data errors, such as rare or easily misidentified species.
The eBird needs alerts and rare bird alerts are based on observations
flagged by these filters. When you see common species showing up on these
lists, it is likely that a birder chose to report a subspecies that
triggered one of the filters. Most eBird reviewers have subspecies flagged
to ensure the proper written description or evidence is provided when
identifications are made to that taxonomic level.

Below I've linked an article about the review process that might help
further answer your question. It's one that I'm sure other eBirders have
had as well. Cheers!

Zac Cota
Washington County eBird Reviewer

On Mon, Jun 29, 2020 at 9:27 PM R Stewart <2cnewbirds...> wrote:

> Can someone please inform why certain very common birds keep showing up on
> the Rare Bird Alert - such as Am Robin, (migratorius Group) , House Wren,
> Turkey Vulture, Common Yellowthroat, Barn Swallow, Song Sparrow, etc?
> AND why a Yellow-billed Cuckoo seen up N. is on the list and not the YBCU
> reported in the southern 'sun belt?"
> --
> Ruth Stewart
> E. Dorset VT

Zac Cota
*he/him pronouns (why?
*& Volunteer Coordinator*
North Branch Nature Center
713 Elm Street
Montpelier, VT 05602
(802) 229-6206 ext. 110
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