List of abbreviated names of song nuclei used in describing the parrot song system by various studies interpreted relative to our study.

* NAs defined in Striedter [32] is a small portion of what we find as the NAO shell, in which authors said was analogous to songbird LMAN. NAom defined in Durand et al. [34] is another small portion of what we define as NAO shell. NAo core and surround and HVo core and surround in Jarvis et al. [24] was together called the NAo and HVo complex. AAcv in Durand et al. [34] and Jarvis et al. [24] comprised the ventral part of the AAC shell described here.List of abbreviated names of song nuclei used in describing the parrot song system by various studies interpreted relative to our study.