Re: [nfc-l] good/good enough for Northern Parula?

2019-10-26 Thread Bill Evans
This is an interesting call, but I think not from Northern Parula. That species 
typically does not have this much broad waviness along the main trunk of the 
call, and there is no sign of the ~4 ms finer modulations - though playing 
around with spectrogram parameters would be necessary to rule that out. My best 
guess is this could be a flat variant of the descending “zeep” Yellow Warbler 
regularly gives in fall migration (at least in eastern NA). There is no example 
of the descending YEWA nfc in the original flight call guide - the 2nd ed. will 
have it.

Bill Evans

From: Wim van Dam 
Sent: Saturday, October 26, 2019 2:38 AM
To: Night Flight Call Discussions 
Subject: [nfc-l] good/good enough for Northern Parula?

On October 19, in Solvang, California, I recorded the following night call, 
which I consider a possible Northern Parula. The 7 second WAV recording, 
spectrogram, and written description are all in this eBird report:
https://ebird.org/checklist/S60930344 


I'm curious to hear if people agree with this ID, or if I should consider 
another (more common) species. 

Thanks
Wim van Dam 
Solvang, CA, USA


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Re: [nfc-l] good/good enough for Northern Parula?

2019-10-26 Thread Bill Evans
This is an interesting call, but I think not from Northern Parula. That species 
typically does not have this much broad waviness along the main trunk of the 
call, and there is no sign of the ~4 ms finer modulations - though playing 
around with spectrogram parameters would be necessary to rule that out. My best 
guess is this could be a flat variant of the descending “zeep” Yellow Warbler 
regularly gives in fall migration (at least in eastern NA). There is no example 
of the descending YEWA nfc in the original flight call guide - the 2nd ed. will 
have it.

Bill Evans

From: Wim van Dam 
Sent: Saturday, October 26, 2019 2:38 AM
To: Night Flight Call Discussions 
Subject: [nfc-l] good/good enough for Northern Parula?

On October 19, in Solvang, California, I recorded the following night call, 
which I consider a possible Northern Parula. The 7 second WAV recording, 
spectrogram, and written description are all in this eBird report:
https://ebird.org/checklist/S60930344 


I'm curious to hear if people agree with this ID, or if I should consider 
another (more common) species. 

Thanks
Wim van Dam 
Solvang, CA, USA


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NFC-L List Info:
Welcome and Basics
Rules and Information
Subscribe, Configuration and Leave
Archives:
The Mail Archive
Surfbirds
Birding.ABA.Org
Please submit your observations to eBird!
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Welcome and Basics � http://www.northeastbirding.com/NFC_WELCOME
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Subscribe, Configuration and Leave � 
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Surfbirds � http://www.surfbirds.com/birdingmail/Group/NFC-L
Birding.ABA.Org � http://birding.aba.org/maillist/NFC

Please submit your observations to eBird! ��http://ebird.org/content/ebird/
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