??Hi all, I tried to send this yesterday night but for some reasons the whole email got lost in cyberspace! So I had to type the whole thing again.
I analyzed songs of the Tennessee warblers I recorded day before yesterday. I found that there were at least 15 + individuals and each of them had different songs. They have initial introductory notes and a rapid trill. Each individual seemed to be distinct and sang the same song except a couple of birds seemed to have shortened the trill a couple of times. See the spectrograms. Tennessee 1 [cid:b3c4617e-359f-4c5c-a4ad-2f8762366971] Tennessee 2 [cid:dd5a2b95-1d04-4e19-9ddf-267c057b9a49] Even though some of the introductory notes look similar there is different emphasis for each note. So it was exhilarating to know they vary so much. A couple of years ago I had compared four of them and they also seemed to have differed. Yesterday we heard Bay-breasteds and Cape Mays also doing lots of variations. The Chestnut-sided I heard did not seem to sing the regular "Pleased Pleased to meet you", which we hear in Ithaca area, but instead they had totally a different dialect. I also found all three species singing at the same time and there was overlap of songs. So how do they recognize each other or different species when they are all singing together in same band width. With so much of exuberance they sing and the amount of energy they spend on songs. It is such fun to decode their songs! Cheers Meena Meena Haribal Ithaca NY 14850 42.429007,-76.47111 http://www.haribal.org/ http://meenaharibal.blogspot.com/ Ithaca area moths: https://plus.google.com/118047473426099383469/posts Dragonfly book sample pages: http://www.haribal.org/dragonflies/samplebook.pdf -- Cayugabirds-L List Info: http://www.NortheastBirding.com/CayugabirdsWELCOME http://www.NortheastBirding.com/CayugabirdsRULES http://www.NortheastBirding.com/CayugabirdsSubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/cayugabirds-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/Cayugabirds 3) http://birdingonthe.net/mailinglists/CAYU.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
