Cobirders -
I'm still "wading" through the article referenced below
about the massive bird die-off that occurred last fall during migration amd
which was attributed for the most part to the two largest recorded fires
ion Colorado; EVER!
I feel pretty confident when I conjecture that the dearth of bluebirds
during this spring's migration may be attributed to the the die-off
attributed to last fall's two major forest fires. In other words, ther
population pf bluiebiords was hot severely by those fires, and there is
not the "normal" number of those birds available to comprise a "norrmal"
spring migration he on Colprado's Fronmt Ranmge.re
Mass Bird Die-Off Linked to Wildfires and Toxic Gases
*
https://eos.org/research-spotlights/mass-bird-die-off-linked-to-wildfires-and-toxic-gases
<https://eos.org/research-spotlights/mass-bird-die-off-linked-to-wildfires-and-toxic-gases>*
Bill Miller
Fort Collins
On Fri, Apr 9, 2021 at 8:51 AM Barbara Spagnuolo <bspagnu...@crgov.com>
wrote:
> I can report, although informally, that I did not hear or see many
> bluebirds while I visited various nest boxes around Castle Rock for box
> maintenance & repair this season. In fact, despite visiting 14 different
> sites between the first week of March and yesterday (always on calm sunny
> days), I heard/saw bluebirds only twice. That is definitely very low
> compared to previous years. But I can also report more specifically that we
> found only 3 complete nests and 5 incomplete nests in our 190 nest boxes
> last week during the first week of monitoring, compared to 5 complete nests
> and almost a dozen incomplete nests during the first week of monitoring in
> 2020. We too have a very detailed monitoring program with extensive data
> keeping since 2007, so we will have a good opportunity for data comparison
> at the end of the season.
>
> -Barbara Spagnuolo, Castle Rock (Douglas County)
>
>
>
> *From:* 'Hugh Kingery' via Bluebird-Babble <
> bluebird-bab...@googlegroups.com>
> *Sent:* Wednesday, April 7, 2021 5:50 PM
> *To:* cobirds@googlegroups.com; douglbi...@googlegroups.com;
> bluebird-bab...@googlegroups.com
> *Subject:* {Bluebird-Babble} Bluebird dearth
>
>
>
> We have not seen many bluebirds this spring, so I compared this year with
> the three prior years' data. This year we have seen only one or two of
> either species only once in a while. The last 3 years we saw them almost
> daily starting in mid-March.
>
>
>
> This drop seems striking, at least along our road and on the trail we walk
> regularly. Have others noticed this pattern?
>
>
>
> Hugh & Urling Kingery
>
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