mystery sound :: 1544

Sound:   unidentifiedbird.mp3 posted by Alex Van Herrewege on 2011-01-07 11:01:36 :: Return to the mystery page

Alex Van Herrewege Posts: 2 Recordings: 15	posted on 07-01-2011, at 11:53 Hello, A collegue birdwatcher recorded a birdsound which we do not recognise. It was recorded in the N-E of Belgium (habitat: dry heath) at 24 May 2010 at 23:00 hour. Best regards Alex
Ruud van Beusekom Posts: 21 Recordings: 222	posted on 07-01-2011, at 13:11 A singing Red-necked Nigthjar!
Ruud van Beusekom Posts: 21 Recordings: 222	posted on 07-01-2011, at 14:02 Alex, are you sure this bird was recorded in Belgium? I probably don't have to tell you that Red-necked Nightjar is extremely rare outside the Iberian Peninsula. And that this record would be a first for Belgium... Cheers! Ruud
Van Herrewege Alex Posts: 10 Recordings: 4	posted on 07-01-2011, at 15:12 Hello, Ruud, Yes, recorded at Meeuwen/Belgium. But after I listened to several records on XC: is the noise not very similar to the alarm-call of a eurasion night-jar (which indeed is present in that region) ?? Regards Alex
Ruud van Beusekom Posts: 21 Recordings: 222	posted on 07-01-2011, at 16:15 Dear Alex, I really don't think it's similar to the (flight)calls of Nightjar at the XC-site at all! These 'ko-eck' calls (also audible at your recording, by the way) always have a rising second syllable, very obvious on sonograms. They also lack the double "knocking" quality of your bird, which is so characteristic for Red-necked Nightjar. I have compared the sonograms of your bird with others from Red-necked Nightjar and they are very similar, although the songs show some variation in pitch and speed of delivery. This is normal and I have noticed this in Spain myself. Listen especially to the recording of Schulze & Dingler (Die Vogelstimmen Europas, Nordafrikas und Vorderasiens, disc 7, recording 49) which is very similar to your recording! I know it's very hard to believe, but to me this recording is a perfect example of the song of a male Red-necked Nightjar, which I know well from Spain. Recorded in Belgium. Incredible! Ruud
Ruud van Beusekom Posts: 21 Recordings: 222	posted on 07-01-2011, at 21:42 Alex, the recording is really short and it seems there has been cut in it. Maybe you could ask your friend to put the complete recording on xeno-canto? Just because this is a most exciting and important recording, and it is of good quality too! Ruud (by the way, I can't find your own recordings on the site!)
Sander Bot Posts: 30 Recordings: 580	posted on 08-01-2011, at 18:31 It seems to be a HOAX, the recording is probably not made in Belgium...... http://forum.waarneming.nl/smf/index.php/topic,133693.0.html
Van Herrewege Alex Posts: 10 Recordings: 4	posted on 08-01-2011, at 21:23 OK, in the meantime I got full details from Gerald Driessen about that record which I found on Waarnemingen.be. I explaind him that he better could cancel that item, otherwise other people could get interested and will try to solve it, and pick it up just like I did.... He promised me to do so. I add here a copy of the mail I sent to Gerald Driessen: Hallo, Gerald, Het is wellicht nuttig uit te leggen hoe ik in deze historie ben geraakt. - Ik scharrelde zowat rond in de geluiden welke op waarnemingen.be staan geregistreerd - Ik viel over de opname van Gene Vanoosterwijk van de onbekende vogel, en was geboeid. - Vermits ik vroeger al onbekende geluiden liet nachecken op xeno-canto, deed ik dat ook voor deze record - Daarop kreeg ik het antwoord dat het met zekerheid zou gaan om een moorse nachtzwaluw, evenwel met de melding dat dit wel zeer zeer uitzonderlijk zou zijn. (trek eens na wat onder "mysteries" op XC door mij werd ingegeven, en door Mr.Van Beusekom werd geantwoord.) Tot daar mijn verhaal - de gebroeders Dreesen ken ik niet en werd ook niet door hen gekontakteerd. Ik denk dat het beter zou zijn om de betrokken waarneming te schrappen, dan zou daar niemand meer over vallen. Het is pas later dat ik gezien heb dat er op zelfde datum nog een andere waarneming met hetzelfde geluid staat van Gene Vanoosterwijk, echter met de verklaring dat het een gewone nachtzwaluw zou zijn. Dat is dan natuurlijk ook weer verwarrend. Misschien wordt dat ook beter aangepast ....zoniet zal er binnen afzienbare tijd NOG iemand de draad opnemen. In ieder geval weet ik nu dat er meer achter deze hele waarneming zit, en ben er ook niet verder in geïnteresserd. In elk geval bedankt voor de informatie. Groeten Alex Best regards Alex

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