: Friday, May 11, 2012 8:26 AM
To: Mike Farmer
Cc: NFC-L
Subject: Re: [nfc-l] Austin, Tx - Hourly count - Through May 7, 2012
Jessie and Mike, I will answer both of your posts in more detail later when
I have time, but to my knowledge there has only been one person to collect
definitive data on call
on
thrushes! Is the warbler one really yet?
How cool is that!
-Mike Farmer
From: David La Puma
Sent: Friday, May 11, 2012 10:29 AM
To: NFC-L
Subject: Re: [nfc-l] Austin, Tx - Hourly count - Through May 7, 2012
Jesse et al.
My thought was that birds are going to migrate for 100's of miles
least until you professionals give us more ways to
>> crunch the statistics.
>>
>> Sorry for the mini-rant. I think newbies should be less frustrated by
>> missed calls than we just naturally seem to be. The pursuit of perfection
>> should not be the enemy of the
for the mini-rant. I think newbies should be less frustrated by
> missed calls than we just naturally seem to be. The pursuit of perfection
> should not be the enemy of the good.
>
> -Mike Farmer
> -Oldbird and Raven Pro detectors are greatnewbies, use them!
>
> *From:*
Farmer
-Oldbird and Raven Pro detectors are greatnewbies, use them!
From: Lewis Grove
Sent: Friday, May 11, 2012 8:26 AM
To: Andrew Albright
Cc: Mike Farmer ; NFC-L
Subject: Re: [nfc-l] Austin, Tx - Hourly count - Through May 7, 2012
Hi Andrew and all,
Automated detection of calls
Hey all-
As someone who works in behavioral acoustics, I'd really appreciate hearing
some speculation about why these birds are calling. What is the call
function? Because this will affect everything about how we interpret these
graphs. For example, Mike, why do you think that calling should
Nice data Mike! The relationship looks intuitive to me. Here's my
broadly-general speculation on the topic:
Under stable atmospheric conditions, I think you get less flight calls
during initiation of migration than you do once birds are at altitude. The
rationale is that birds don't really 'need'
Here's a link to NOAA's solar calculator. There is a nice convenient
Excel spreadsheet you can download that calculates sunrise and
sunset for any location.
http://www.esrl.noaa.gov/gmd/grad/solcalc/calcdetails.html
I've found that flight calls seem to steadily
Mike - I enjoy reading your reports, so keep 'em coming!
I'm no expert, but I think when I asked the question before it seems
that the general idea is that nfc are easier to detect in the first
couple of hours and then around dawn as birds will be flying at lower
elevations (and they can get so
