Male Orangutan have this thing called the long call. It likely also serves other functions, including a display to attract sexually receptive females, and a signal to inform the community of the location of the dominant male. Males tend to call in bad weather, when another male is visible or calling, when close to a sexually receptive female, or as an element of copulatory behavior. Calls are audible up to 1.2 mi (2 km) from the source. Other vocalizations include a variety of grunts, squeaks, moans, barks, and screams. Alarmed and agitated individuals produce "kissing" and "gluck-gluck gluck" sounds that seem to indicate their level of annoyance. These noises are often accompanied by aggressive physical displays, such as shaking and breaking branches.
Sunday, January 31, 2010
Communication
Male Orangutan have this thing called the long call. It likely also serves other functions, including a display to attract sexually receptive females, and a signal to inform the community of the location of the dominant male. Males tend to call in bad weather, when another male is visible or calling, when close to a sexually receptive female, or as an element of copulatory behavior. Calls are audible up to 1.2 mi (2 km) from the source. Other vocalizations include a variety of grunts, squeaks, moans, barks, and screams. Alarmed and agitated individuals produce "kissing" and "gluck-gluck gluck" sounds that seem to indicate their level of annoyance. These noises are often accompanied by aggressive physical displays, such as shaking and breaking branches.
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