ML621290483
new world warbler sp. Parulidae sp.
Laguntzailea
Data
Kokapena
- Adina
- Zehaztu gabea
- Sexua
- Zehaztu gabea
- Soinuak
- Kantua
- Grabaketa
- Erreklamorik gabe
Behaketaren xehetasunak
This bird was unseen. I was close to the source of the song about four or five metres up and maybe five metres off of the road in the top of young poplar and spruce trees, but couldn’t find the bird for visual confirmation. Approximately 45.080194, -64.969504. I first believed I was listening to some form of NOPA song, but it didn’t seem right. I used the Merlin app and it gave no suggestion. After listening to the recordings on Merlin, and viewing the sonograms of both NOPA and BTBW I didn’t hear nor see any that were similar. I then went looking at some of the rarer warbler songs and came upon the recording of Cerulean Warbler by Wil Hershberger, West Virginia, June 2010 and it sounded the same and the sonogram looked the same. https://macaulaylibrary.org/asset/168301 I first submitted to eBird CERW. The description of the song in eBird: “Male Cerulean Warblers sing a buzzy song that ascends to a buzzy trill. The song starts with 3 buzzy notes, followed by 4 fast warbles, and ends with a higher pitched buzzy trill.” The Audubon Society website describes the song as: “A Cerulean song has three sections, each with different qualities. One key point is that the last section is a trill, a bit slower than a buzz, and all on a steady pitch.” I think that this description holds true for the sonogram that I recorded. There are two files of the same recording, both were edited as per Jay McGowan’s suggestions on eBird, one was edited on the iPhone, the other on my desktop computer. I have received a number of opinions on this song with no one committing to a species. ~~~~~~~~~~~~~~~~~~~ "Hi George, I can't say for certain that it's not a Cerulean, and I agree the quality is reminiscent, but it is an aberrant song no matter what species it is, so I would be hesitant to claim it as Cerulean (assuming that is rare there) without visually confirming it. Warblers frequently have unusual song types, including fully sounding like another species, so birds like this must be tracked down and seen well in order to identify." Jay McGowan Macaulay Library Cornell Lab of Ornithology ~~~~~~~~~~~~~~~~~~~ "Good morning, George, Thank you for your email with your interesting recordings. After I received your email and listened to your recordings, I forwarded it to my two former graduate students who have worked extensively on Cerulean Warbler song. Their responses are as follows: “Interesting audio. I think if I was the eBird reviewer in Nova Scotia I would want a little more to confirm the record given the rarity of the species there (especially midsummer). It looks like NS has a few CERW records but primarily strays during spring and fall migration. I worry about NOPA and BTBW for this. And given songs are learned, who knows..." "The audio partially suggests CERW but the middle element is quite odd, and I don't remember seeing anything like that in the audio I recorded or measured for my MSc. I would suggest a return to the site for follow-up hopefully leading to visuals. The bird is singing like it's on territory, and this was but a few days ago. Odds of relocating seem pretty good." "I would push back on the assertion that George's audio is a good match for Wil Hershberger's ML recording - the middle element is quite different.” AND “I agree with all of the points that Garrett mentioned. My initial thoughts were that it just doesn't sound anything like a Cerulean Warbler, especially the first and middle sections. Also, it does not match Wil Hershberger's recording, as Garrett mentioned." "I still suppose it is possible, but it would likely require visual confirmation. It doesn't seem like a good match for any particular species, which is the tricky thing." "Also, I did look at the buzz section in Raven and did a quick and dirty measurement of the trill rate. It was around 173 notes per second, which is significantly higher than any I measured for CERW (maximum of ~120 hz). I'm not sure what that means, but there are several other warbler species which produce buzzes at those higher trill rates." "An interesting case nonetheless, and worth some more investigation.” "Another possibility is that the bird may be a hybrid. In 2017, we documented the first hybrid pairing between a male CERW and a female BTBW in our southern Indiana research site ." I hope the above information is helpful. With best wishes and good birding," Kamal Islam, Ph.D. Professor Cerulean Warbler Research Laboratory Department of Biology Ball State University Muncie IN ~~~~~~~~~~~~~~~~~~~ Also, check out the Sibley link below https://www.sibleyguides.com/2020/05/a-cerulean-like-song-variant-of-black-throated-blue-warbler/ Hopefully someone in the future might come upon a way to ascertain the species of this songster!
Espezie gehigarria
Informazio teknikoa
- Grabatzailea
- iPhone 11
- Mikrofonoa
- Osagarriak
- Fitxategiaren tamaina originala
- 12.84 MB