Developmental changes in song-suppressive responses in LMANcore and LMANshell neurons. A, Proportion of auditory neurons that responded with suppression to any song stimulus in core (gray) and shell (red) at 45 dph (core, n = 83; shell, n = 77), 60 dph (core, n = 76; shell, n = 46), and adult (core, n = 120; shell, n = 154) birds. B, Proportion of BOS-responsive neurons that were suppressed by BOS in core and shell at 45 dph (core, n = 65; shell, n = 36), 60 dph (core, n = 53; shell, n = 26), and adult (core, n = 82; shell, n = 100) birds. *p < 0.05 and ***p < 0.001.