Date: 7/8/19 2:21 pm
From: John Rawinski <mvjohnski...>
Subject: [cobirds] Re: Grace's Warbler, Costilla County (private ranch)
Thanks for the update Eric. We did have a Grace's Warbler in Conejos County
during the 2009 CFO Convention at Mogote Campground. A few other reports
have been chased down with no verification. Nice find on the east side.

John Rawinski
Monte Vista, CO

On Monday, July 8, 2019 at 1:19:25 PM UTC-6, Eric DeFonso wrote:

> Hi all,
>
> While doing a survey for the Bird Conservancy on a private ranch near Fort
> Garland in Costilla County this morning, I heard and recorded a Grace's
> Warbler at around 9200' in an area of mixed ponderosa pine/Douglas-fir
> habitat with a fairly developed understory of sage and serviceberry. It
> caught me quite by surprise and unfortunately the bird was not close by,
> but I did manage a fairly lousy recording of it from a range of about
> 70-100 meters (I'm guessing). Based on past experience with this species I
> knew it would take a while to visually locate, and unfortunately I was
> still in the middle of my scheduled survey and needed to stay on time since
> I was on private property. But I think my recording will confirm its
> identity, as the spectrogram of the sound matches GRWA exactly and rules
> out other (somewhat) sound-alikes like Dark-eyed Junco, Chipping Sparrow,
> and Virginia's Warbler.
>
> According to eBird, there are currently no accepted records of GRWA in
> Costilla County, and the Colorado County Birding page currently does not
> include GRWA on its Costilla checklist. However, the site for this bird is
> only about 25 miles from Spanish Peaks SWA and its known GRWA locations,
> and only 50 miles from known locations in northern New Mexico as well as
> Pueblo Mountain Park.
>
> I wanted to share this not so much to provide a chasing opportunity, but
> rather to raise awareness of what seems like a broader pattern of
> occurrence for this species in south central Colorado. Put it on your radar
> as a possible find in appropriate habitats of San Luis Valley!
>
> Good birding,
> Eric
>
> -------
> Eric DeFonso
> near Lyons, Boulder County, CO
>

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