Tristis-type calls

The variability of the tristis call is still not well-known. Some recordings below.

The scale is the same in every recording, but the interval between calls is shortened in several cases in order to get two calls inside two seconds. There is some variation even within the calls of the same individual, one of the Oman recordings is a good example of this.

(1) 29 May 2008, Karaoy, Almaty province, Kazakstan

(2) 21 September 2008, Halias, Hanko, Finland

(3) 19 December 2008, Dasada, Gujarat, India

(4) 2 December 2007, Kosi river, Uttarakhand, India

(5) November 2002, Qatbit, Central Desert, Oman

(6) November 2002, Qatbit, Central Desert, Oman

(7) 13 December 2014, Bharatpur, Rajastan, India

(8) 13 December 2014, Bharatpur, Rajastan, India

(9) 15 December 2014, Ranthambore, Rajastan, India