The walls of the cerebral ventricles in the developing embryo harbor the primary neural stem
cells from which most neurons and glia derive. In many vertebrates, neurogenesis continues …

Phenotypic traits are products of two processes: evolution and development. But how do
these processes combine to produce integrated phenotypes? Comparative studies identify …

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 …

The comparison of gene expression patterns in the embryonic brain of mouse and chicken is
being essential for understanding pallial organization. However, the scarcity of gene …

The amygdala is a forebrain center involved in functions and behaviors that are critical for
survival (such as control of the neuroendocrine system and homeostasis, and reproduction …

In our companion study (Jarvis et al.[2013] J Comp Neurol. doi: 10.1002/cne. 23404) we
used quantitative brain molecular profiling to discover that distinct subdivisions in the avian …

Biologists have long been interested in both the regularities and the deviations in the
relationship between brain, development, ecology, and behavior between taxa. We first …

Anseriform birds (ducks and geese) as well as parrots and songbirds have evolved a
disproportionately enlarged telencephalon compared with many other birds. However …

Brains, and the distinct regions that make up brains, vary widely in size across vertebrates
[1, 2]. Two prominent hypotheses have been proposed to explain brain region scaling …

The identification of pronounced seasonal changes in the volume of avian song control
nuclei stimulated the discovery of adult neurogenesis in songbirds as well as renewed …