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August 2016

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Subject:
From:
Betsy MacMillan <[log in to unmask]>
Reply To:
Betsy MacMillan <[log in to unmask]>
Date:
Fri, 26 Aug 2016 20:43:47 -0400
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After reading about nighthawk migration, we went to our back deck tonight to see if they were
in our northeast Ohio suburban location. 
       Results in 30 minutes:
2 common nighthawks
2 northern cardinals 
3 American goldfinches
4 chimney swifts
740  American robins!! 
All birds were flying northeast over my house and neighbors' yards 
Thanks for the tip on the nighthawks!
Betsy Mac

Sent from my iPhone

> On Aug 26, 2016, at 1:22 PM, Bill Whan <[log in to unmask]> wrote:
> 
> Like other reporters, I have only a dribble of nighthawks to report.
> I can recall climbing onto the roof of my house on an early evening
> in the 80s to estimate ~600 nighthawks passing maybe 20 feet overhead. A
> couple of years later I was still able to find 300+ in the neighborhood,
> but three-digit numbers are no more. Here in town, Lawrence Hicks
> counted 1200 on 8/26/37, not an unusual number at the time. Kirk
> Alexander had 800 in town on 8/27/1987, and Bruce Stehling reported 400
> here on 9/20/1975 and 500 on 9/9/1980. These numbers obviously
> represented just those counted in limited areas by single observers on
> certain evenings.
>       This species has been estimated (Cornell Lab) to have diminished by
> ~61% since the mid-60s, killed off by pesticides and habitat
> degradation; I wonder if this is an underestimation. The Cornell site
> relates that one banded in Ohio was the oldest known, at nine years of
> age. Little is known about their South American wintering grounds.
>       Various experts blame the loss of their numbers on human controls of
> mosquitoes and other insects; this seems unlikely, given the large part
> of their lengthy migration undertaken in rural areas where such controls
> are less often undertaken. Others blame new roof treatments, but of
> course these too seem trivial over their range. I can't explain why, but
> I am looking for fewer and fewer of these birds as time passes.
> Bill Whan
> 
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