Table 1 Overview of southern yellow-cheeked gibbon males and the composition of the family groups.
General information | ||||||||
|---|---|---|---|---|---|---|---|---|
Zoo | Jihlava | Bojnice | ||||||
No. group | 1 | 2 | 3 | |||||
Subjects of the study | Young male 1 | Young male 2 | Young male 3 | Young male 4 | ||||
Date and place of birth | 29 November 2007, Jihlava | 14 October 2009, Jihlava | 2 April 2011, Jihlava | 2 April 2008, Bojnice | ||||
Age of the young males during the study | 6.5–8.11 | 7–7.9 | 5.6–6.3 | 6.5–8.11 | ||||
Date, number of solo songs and number of male calls recorded | Female-like great call produced simultaneously with male call | Date, number of solo songs and number of male calls recorded | Female-like great call produced simultaneously with male call | Date, number of solo songs and number of male calls recorded | Female-like great call produced simultaneously with male call | Date, number of solo songs and male calls recorded | Female-like great call produced simultaneously with male call | |
Observation calls | 28 May 2014 (6.5 years); 1; 7 | Yes | 19–20 October 2016 (7 years); 4; 39 | Yes | 19 October 2016 (5.6 years); 1; 11 | Yes | 16, 18 September 2014 (6.5 years); 5; 55 | Yes |
6–7 November 2014 (6.11 years); 4; 69 | Yes | |||||||
20–21 May 2015 (7.5 years); 3; 50 | No | 15 November 2016 (7.1 years); 2; 19 | Yes | 15 November 2016 (5.7 years); 2; 34 | Yes | 18–20 June 2015 (7.2 years); 9; 106 | No | |
20–22 August 2015 (7.8 years); 7; 139 | No | |||||||
19–20 October 2016 (8.10 years); 2; 36 | No | 4 July 2017 (7.9 years); 2; 20 | No | 5 July 2017 (6.3 years); 2; 52 | Yes | 30–31 March 2017 (8.11 years); 4; 37 | No | |
15 November 2016 (8.11 years); 1; 12 | No | |||||||
Total number of solo songs of male call | 18 | 8 | 5 | 18 | ||||
Total number of young male calls | 313 | 78 | 97 | 198 | ||||
