Figure 2.

Preferences independent of and dependent on song exposure. The preference was measured as time in seconds (±s.e.m.) near the speaker broadcasting songs constructed with MC elements or songs constructed with LC elements. For zebra finches at 37 dph (before tutoring; see Material and methods) this preference is higher for more common elements (white bar) than for less common elements (black bar). At 57 dph (after tutoring), birds prefer the type of sounds they have been tutored with; birds tutored with MC elements (lower panel) prefer songs with more common elements and birds tutored with less common elements (top panel, LC) preferred less common element types.