Passive acoustic monitoring (PAM) has the potential to greatly improve our ability to monitor
cryptic yet vocal animals. Advances in automated signal detection have increased the scope …

The cao vit gibbon (Nomascus nasutus) is one of the rarest primates on Earth and now only
survives in a single forest patch of less than 5000 ha on the Vietnam–China border …

Highlights•Male gibbon morning calls conform to Zipf's law of brevity and Menzerath's
law.•The most common notes being shortest in duration.•Longer sequences are made up of …

Early morning calling occurs across diverse taxa, which may be related to optimal conditions
for sound transmission. There exists substantial inter-and intra-specific variation in calling …

Quantifying patterns of variation in primate vocalizations has important implications for
understanding the evolutionary processes that lead to variation in phenotypic traits more …

Gibbons are generally reported to live in small socially monogamous family groups in which
both sexes disperse when they reach maturity. For the first time, we documented the …

Evidence for compression, or minimization of code length, has been found across biological
systems from genomes to human language and music. Two linguistic laws—Menzerath's …

As social animals, many primates use acoustic communication to maintain relationships.
Vocal individuality has been documented in a diverse range of primate species and call …

Neighbour-stranger discrimination plays a crucial role in territorial animals and is expressed
as either the dear enemy phenomenon or the nasty neighbour effect. Previous evidence …

Vocal individuality and stability has been used to conduct population surveys, monitor
population dynamics, and detect dispersal patterns in avian studies. To our knowledge, it …