mystery sound :: 1653

Sound:   Phylloscopus sp (song).mp3 posted by Fabian Schneider on 2011-05-15 16:05:33 :: Return to the mystery page

Fabian Schneider Posts: 6 Recordings: 4	posted on 15-05-2011, at 15:18 A strange Phylloscopus song; COmment are welcome.
Volker Arnold Posts: 104 Recordings: 634	posted on 15-05-2011, at 18:00 Dear Fabian, a strange mixture of Phylloscopus collybita (begins of song elements) and Ph. trochilus (ends of song elements). Never heared! Your record is such faint that nearly nobody will hear this song. You should treat it with Audacity (highpass 2500 Hz, 48 db, and normalizing). So you will hear much more noise, but also the strange song. If you send me yor mail adress to h.v.arnold@t-online.de, I can send you the modified song. Volker
Fabian Schneider Posts: 6 Recordings: 4	posted on 15-05-2011, at 21:19 I have modified the file, see new post above.
Bram Piot Posts: 19 Recordings: 443	posted on 16-05-2011, at 20:16 Salut Fabian, Interesting bird - very much a 50/50 mixed singer, which makes a hybrid Willow Warbler x Chiffchaff a possible origin. That said I'm not sure how "extreme" an unusual Chiffchaff or Willow Warbler could sound, and the start of the Chiffchaff part of the song sounds quite Iberian Chiffchaff like! Other mixed singers often seem to be more Willow than Chiffchaff. Did you manage to see the bird? bram
Herman van der Meer Posts: 158 Recordings: 516	posted on 02-10-2011, at 18:35 Hi, last May I recorded a similar song in Meijendel, The Netherlands. http://waarneming.nl/sound/0/7840.mp3 Because I did not see the bird, had no real idea what it was and couldn't find it on XC, I asked for help on the forum of Waarneming.nl http://forum.waarneming.nl/smf/index.php?topic=142833.0 It appeared that Bram ter Keurs recently recorded an almost similar song, saw the bird and identified it as Phylloscopus collybita. http://waarneming.nl/sound/2/7322.mp3 According to Bram is was uttered during a territorial dispute.
Willem-Pier Vellinga XC administrator Posts: 1755 Recordings: 448	posted on 02-10-2011, at 18:40 well, it may have looked like a Chiffchaff, but surely this sound is not typical for Chiffchaffs? did the visual ID exclude Iberian Chiffchaff or some hybrid?
Herman van der Meer Posts: 158 Recordings: 516	posted on 02-10-2011, at 19:19 Bram ter Keurs was sure about his identification and because of the abbarant song, I am sure he had as close a look as possible, with a possible other Phyllo in mind. I compared my recording with various Phylloscopus species and apart from Chifchaff, I heard some simlilarity with Iberian Chifchaff, but dismissed that. It is of course not a typical Chifchaff song. Could it be the result of extreme excitement?
Willem-Pier Vellinga XC administrator Posts: 1755 Recordings: 448	posted on 02-10-2011, at 20:07 my point was really that the only way to separate Iberian and "normal" Chiffchaffs in the field is by sound. So if a bird sounds like a mix of those two, then what is it? It seems to be quite normal for assumed vagrant birds that sound like Iberian Chiffchaff to show large variation in their song. It would certainly be nice to have a large set of recordings of aberrant Chiffchaff songs from all over Europe (hint :-) ).
Willem-Pier Vellinga XC administrator Posts: 1755 Recordings: 448	posted on 02-10-2011, at 20:09 listening to this particular sound again, it seems to combine chiffchaff, willow warbler and Iberian chiffchaff? or is the willow warbler a 2nd bird?
Herman van der Meer Posts: 158 Recordings: 516	posted on 03-10-2011, at 17:57 You are right. It is a mixed singer, ending with Willow Warbler, so my examples are not the same.
Hemprich,M. Posts: 28 Recordings: 13	posted on 22-04-2012, at 9:37 mixed song collybita & trochilus. possible: variation of trochilus (Thielke et.al., 19xx.). It´s not possible to differentiate hybrids and trochilus only on the basis of the song. MH

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