Night-vision brain area in migratory songbirds

Journal Article

Twice each year, millions of night-migratory songbirds migrate thousands of kilometers. To find their way, they must process and integrate spatiotemporal information from a variety of cues including the Earth's magnetic field and the night-time starry sky. By using sensory-driven gene expression, we discovered that night-migratory songbirds possess a tight cluster of brain regions highly active only during night vision. This cluster, here named "cluster N," is located at the dorsal surface of the brain and is adjacent to a known visual pathway. In contrast, neuronal activation of cluster N was not increased in nonmigratory birds during the night, and it disappeared in migrants when both eyes were covered. We suggest that in night-migratory songbirds cluster N is involved in enhanced night vision, and that it could be integrating vision-mediated magnetic and/or star compass information for night-time navigation. Our findings thus represent an anatomical and functional demonstration of a specific night-vision brain area. © 2005 by The National Academy of Sciences of the USA.

Full Text

Duke Authors

Cited Authors

  • Mouritsen, H; Feenders, G; Liedvogel, M; Wada, K; Jarvis, ED

Published Date

  • 2005

Published In

  • Proceedings of the National Academy of Sciences of the United States of America

Volume / Issue

  • 102 / 23

Start / End Page

  • 8339 - 8344

PubMed ID

  • 15928090

Digital Object Identifier (DOI)

  • 10.1073/pnas.0409575102