Columba livia (rock pigeon brain)

The brain of a rock pigeon entire from above (top left), entire from below (top right), entire from the lateral left (middle left), vertical-longitunal section (middle right) and horizontal longitudinal sections with increasing depth on each side left to right (bottom two diagrams).  Major regions of the brain shown are the cerebral hemispheres (large, paired, round, grey structures), pineal body (red structure between cerebral hemispheres from above), optic lobes (yellow and round, beneath and posterior to cerebral hemispheres), cerebellum (folded structure, central and posterior), and medulla oblongata (gold, paired central structures at very posterior).