In recent years, there have been over 50 comparative analyses carried out in which social or
ecological variables have been used to explain variation in whole brain size, or a part …

Many attempts have been made to correlate degrees of both animal and human intelligence
with brain properties. With respect to mammals, a much-discussed trait concerns absolute …

Some birds achieve primate-like levels of cognition, even though their brains tend to be
much smaller in absolute size. This poses a fundamental problem in comparative and …

Literature Cited to accompany Animal Communication, 2e Page 1 Principles of Animal
Communication, Second Edition Jack W. Bradbury and Sandra L. Vehrencamp Chapter 14 …

A longstanding issue in biology is whether the intelligence of animals can be predicted by
absolute or relative brain size. However, progress has been hampered by an insufficient …

Much attention has focused on the dramatic expansion of the forebrain, particularly the
neocortex, as the neural substrate of cognitive evolution. However, though relatively small …

Vocal learning is a critical behavioral substrate for spoken human language. It is a rare trait
found in three distantly related groups of birds-songbirds, hummingbirds, and parrots. These …

Early 20th‐century comparative anatomists regarded the avian telencephalon as largely
consisting of a hypertrophied basal ganglia, with thalamotelencephalic circuitry thus being …

In the last decades, the assumption that complex social life is cognitively challenging, and
thus can drive mental evolution, has received much support from empirical studies in …

Given that both sexes of most parrots learn new vocalizations throughout life and produce
them in diverse social contexts, whereas few songbird species combine all these traits, why …