Figure 1.

Localization of the arcopallium in zebra finches. The position and range of sections that contain the arcopallium in adult male zebra finches are shown relative to a dorsal view of the brain. The lines indicate the approximate position of the first and last section in the transverse (orange) and sagittal (blue) series that contain arcopallium and shown in Figs. 2/4 and Figs. 3/5, respectively. Sections containing the arcopallium are located within the area indicated by the red box. The schematic drawings in the blue and orange boxes indicate major structures seen at these brain levels in both planes, while the small rectangles depict the areas of interest containing the arcopallium and shown in Figs. 2-5. Scale: 1mm.