Social complexity has been one of the recent emerging topics in the study of animal and
human societies, but the concept remains both poorly defined and understood. In this paper …

Birdsong has been the subject of broad research from a variety of sub‐disciplines and has
taught us much about the evolution, function, and mechanisms driving animal …

Sperm whales (Physeter macrocephalus) are highly social mammals that communicate
using sequences of clicks called codas. While a subset of codas have been shown to …

Multilevel societies (MLSs), stable nuclear social units within a larger collective
encompassing multiple nested social levels, occur in several mammalian lineages. Their …

While there is no consensus about the definition of complexity, it is widely accepted that the
ability to produce uncertainty is the most prominent characteristic of complex systems. We …

Studies show that specific vocal modulations, akin to those of infant-directed speech (IDS)
and perhaps music, play a role in communicating intentions and mental states during human …

The emergence of complex social interactions is predicted to be an important selective force
in the diversification of communication systems. Parental care presents a key social context …

Variation in cognitive abilities is thought to be linked to variation in brain size, which varies
across species with either social factors (Social Intelligence Hypothesis) or ecological …

Animal and human societies exhibit extreme diversity in the size, composition and cohesion
of their social units, in the patterning of sex-specific reproductive skew, in the nature of …

While rhythm can facilitate and enhance many aspects of behavior, its evolutionary trajectory
in vocal communication systems remains enigmatic. We can trace evolutionary processes by …