A: bilateral view of the song system, highlighting the bilateral feedback pathway to HVC via Uva. NIf, interfacial nucleus of the nidopallium; X, area X of the medial striatum; DLM, medial portion of the dorsolateral thalamic nucleus; LMAN, lateral magnocellular nucleus of the anterior nidopallium; MMAN, medial magnocellular nucleus of the anterior nidopallium; dRA and vRA, dorsal and ventral regions of the robust nucleus of the arcopallium; DMP, dorsomedial nucleus of the posterior thalamus; Uva, uvaeform nucleus of the posterodorsal thalamus; RAm, nucleus retroambigualis; PAm, nucleus paraambigualis; DM, dorsomedial nucleus of the intercollicular complex; nXIIts, tracheosyringeal part of the hypoglossal nucleus. Dotted lines indicate the weak projection from RA to DLM described by Wild (1993a) and Vates et al. (1997) and the projection from dorsal RA to HVC described by Roberts et al. (2008). [Based on a figure from Schmidt et al. (2004) and Ashmore et al. (2005), with permission.]