Chiffchaff calls
(1). Spithami, Noarootsi, Läänemaa, Estonia 5.9.2004. Typical call for this year (and for several other years too) in Estonia and Finland
(2). Tuksi, Noarootsi, Läänemaa, Estonia 14.8.2000. Several calling like this heard in August 2000
(3). Qatbit, Central Desert, Oman 11.11.2002. This is an example of tristis - call (the bird on the background is Lanius isabellinus)
(4.) Calls (2) and (3) compared in spectrogram. Call (2) resembles tristis call but is more "normal" in shape. Tristis call is high, thin and straight. (frequency labels are incorrect)
(5.) 29.8.1998 Nigula, Pärnumaa, Estonia
(6.) 19.8.1998 Hannover, Niedersachsen, Germany
(8.) 3.4.1999 Mamaia, Dobrogea, Romania
(9.) 26.9.1999 Helsinki, Finland
(10.) 16.9.2000 Sörve, Saaremaa, Estonia
(11.) 14.10.2000 Slava Rusa, Dobrogea, Romania
(12.) 23.9.2001 Bierbza, Poland
(13.) 22.9.2002 Espoo, Finland
(14.) 17.9.2003 Urserental, Uri, Switzerland
(15.) 20.9.2003 Col De Bretolet, Valois, Switzerland
(16.) 2.10.2003 Helsinki, Finland
(17.) 12.10.2003 Bierbza, Poland
(18.) Spectrogram of the calls (5.) - (17.) and (1.)
(19.) March, 2001, Portugal (ibericus)
(20.) 2.12.2007 Kosi River, Uttarakhand, India (tristis)