Chimpanzees of the Budongo Forest : Ecology, Behaviour, and Conservation

Screams 143

Fig. 6.10: Spectrograms of scream vocalizations given by three randomly chosen males. Illustrated
are screams given by these individuals during agonistic interactions where they acted as victims
and aggressors (from Slocombe and Zuberbühler, 2005). Copyright © 2005 by the American
Psychological Association. Reprinted with permission.

8

BB

(adult)

6

4

Frequency (kHz)

2

0.2 0.4 0.6

Time (s)

0.8 1.0 1.2

8

BO

(sub-adult)

6

4

Frequency (kHz)

2

0.2 0.4 0.6

Time (s)

0.8 1.0 1.2

8

KZ

(sub-adult)

6

4

Frequency (kHz)

2

0.2 0.4 0.6

Time (s)

0.8 1.0 1.2

Victim Aggressor