Auditory and vocal regulation of gene expression occurs in separate discrete regions of the
songbird brain. Here we demonstrate that regulated gene expression also occurs during …

Budgerigars have a complex vocal repertoire, some of which develops through learning.
The authors examined the course of vocal development in budgerigars from hatching to …

Vocal learning is a rare trait. Humans depend on vocal learning to acquire spoken
language, but most species that communicate acoustically have an innate repertoire of …

Auditory feedback influences the development of vocalizations in songbirds and parrots;
however, little is known about the development of hearing in these birds. The auditory …

In this paper acoustic evidence is presented for the presence of amplitude modulation in
budgerigar (Melopsittacus undulatus) contact calls and learned English vocalizations …

Hodological, electrophysiological, and ablation studies indicate a role for the basal forebrain
in telencephalic vocal control; however, to date the organization of the basal forebrain has …

Budgerigars were trained to produce specific vocalizations (calls) using operant
conditioning and food reinforcement. The bird's call was compared to a digital …

The effects of complete and partial cochlear extirpation at ages 9–11 days posthatch were
assessed in 5 nestling budgerigars (Melopsittacus undulatus) to determine if auditory …

The afferent and efferent projections of a vocal control nucleus, the oval nucleus of the
hyperstriatum ventrale (HVo), were mapped out in a parrot, the budgerigar (Melopsittacus …

The brain of the budgerigar (Melopsittacus undulatus), a small parrot that acquires new
vocalizations throughout life, was examined for immunoreactivity to the opioid peptide …