Sagittal sections of the brains of six species of birds examined in this study.

<p>Photomicrographs of sagittal sections stained with cresyl violet through the brain of six species of birds examined in this study. The top panel shows the principal sensory trigeminal nucleus (PrV) and the bottom panel the nucleus basorostralis (Bas). The broken black lines indicate the borders of each of the regions present in the sections. Brain sections are shown from North Island brown kiwi (<i>Apteryx mantelli</i>), bar-tailed godwit (<i>Limosa lapponica</i>), Eurasian woodcock (<i>Scolopax rusticola</i>), South Island oystercatcher (<i>Haematopus finschi</i>), black-winged stilt (<i>Himantopus himantopus</i>), and masked lapwing (<i>Vanellus miles</i>). Abbreviations: A: arcopallium, N: nidopallium, H: hyperpallium, E: entopallium, SPC: striatopallidal complex, M: mesopallium, C: caudal, R: rostral, D: dorsal, V: ventral. Scale bars; top panel = 1 mm, bottom panel = 2 mm.