Hi all, Well, at least Minnesota and Alabama are both in the US . . . my apologies for the incorrect location reference! The discussion of bittern flight calls has piqued my curiosity about Great Bittern - Magnus and others, what generalization, if any, have you about single versus double call notes in nocturnal migration from that species?
Best, Andrew On Thu, Oct 6, 2011 at 15:14, Bill Evans <[email protected]> wrote: > The original recording was from south-central Alabama in the early morning > (~4AM) of October 8, 1989. Andy cut out the dead space between calls. The > actual sequence is over a minute long and one can interpret the bird > approaching and then flying away. This is the only time I've heard a double > croak from American Bittern -- all other occasions have been single croak > events. I think on most of my night flight call recordings there is usually > only a single call detected from a passing individual. Uncommon but regular > flight call here in central NY. > > Bill E > > > ----- Original Message ----- From: "Andrew Farnsworth" > <[email protected]> > To: <[email protected]> > Cc: <[email protected]>; "Bill Evans" <[email protected]> > Sent: Thursday, October 06, 2011 1:38 PM > Subject: Re: [nfc-l] American Bittern NFC > > > Hi all, > I've certainly heard American Bittern produce isolated notes more > often than not when I've heard them migrating at night, both in the > field and in the lab from recordings; I'd hazard a guess to say that > the single note call is more likely to be encountered . . . but this > is really pure speculation, when it comes down to it, because I've not > heard a tremendous number of bitterns in flight at night! > > Best, > Andrew > > On Thu, Oct 6, 2011 at 12:11, Chris Tessaglia-Hymes <[email protected]> > wrote: >> >> Andrew, >> >> Thanks for pulling this together, and thanks Bill, for providing these >> clips! >> >> Is it most typical for American Bitterns to produce these paired calls >> during migration, or do they often just do single isolated notes? >> >> This is very helpful! >> >> Thanks again! >> >> Sincerely, >> Chris T-H >> >> -- >> Christopher T. Tessaglia-Hymes >> TARU Product Line Manager and Field Applications Engineer >> Bioacoustics Research Program, Cornell Lab of Ornithology >> 159 Sapsucker Woods Road, Ithaca, New York 14850 >> W: 607-254-2418 M: 607-351-5740 F: 607-254-1132 >> http://www.birds.cornell.edu/brp >> >> >> >> -----Original Message----- >> From: Andrew Farnsworth [mailto:[email protected]] >> Sent: Thursday, October 06, 2011 11:59 AM >> To: Chris Tessaglia-Hymes >> Cc: [email protected]; Bill Evans >> Subject: Re: [nfc-l] American Bittern NFC >> >> Hi all, >> With Bill Evans's permission, I attach a heavily edited cut of American >> Bittern flight calls that Bill recorded and sent to me - I believe these >> recordings come from Minnesota, though I cannot say for sure without some >> further investigation. This is certainly the best recording I have, I am not >> sure and have not yet checked if others exist in Macaulay or Xeno-Canto. >> >> Best, >> Andrew >> >> On Thu, Oct 6, 2011 at 09:59, Chris Tessaglia-Hymes <[email protected]> >> wrote: >>> >>> Does anyone have an example of an American Bittern NFC they could >>> attach and post to the List? >>> >>> >>> >>> Thanks! >>> >>> Sincerely, >>> Chris T-H >> >> > > > > > -- > > NFC-L List Info: > http://www.NortheastBirding.com/NFC_WELCOME > http://www.NortheastBirding.com/NFC_RULES > http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm > > ARCHIVES: > 1) http://www.mail-archive.com/[email protected]/maillist.html > 2) http://www.surfbirds.com/birdingmail/Group/NFC-L > 3) http://birdingonthe.net/mailinglists/NFCL.html > > Please submit your observations to eBird: > http://ebird.org/content/ebird/ > > -- > -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/[email protected]/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
